ASTM D3956-23

Standard Specification for Methane Thermophysical Property Tables

ABSTRACT
This specification presents the thermophysical property tables for methane, which are used in the calculation of the pressure-volume-temperature (PVT), thermodynamic, and transport properties of methane for process design and operations. Tables are provided for gaseous and liquid methane at specified temperature and pressure ranges. One table provides properties at the conditions of liquid-vapor equilibrium (saturation properties). The other table provides properties at selected T, p points for the equilibrium phase at those conditions. These tables apply directly only to pure gaseous methane, but are expected to be substantially useful in mathematical models and tables for the thermophysical properties of mixtures containing methane.
SCOPE
1.1 The thermophysical property tables for methane are for use in the calculation of the pressure-volume-temperature (PVT), thermodynamic, and transport properties of methane for process design and operations. Three tables are provided for gaseous and liquid methane at temperatures between 90 K and 600 K at pressures to 30 MPa. Two tables provide properties for the liquid and vapor phases at liquid-vapor equilibrium (saturation properties). The third table provides properties at selected T, p points for the equilibrium phase at those conditions. The tables were developed by the National Institute of Standards and Technology from a Standard Reference Database product REFPROP, version 10.02.  
1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Oct-2023
• ICS: 75.160.30 - Gaseous fuels
• Technical Committee: D03 - Gaseous Fuels
• Drafting Committee: D03.08 - Thermophysical Properties

Relations

• Replaces: ASTM D3956-12(2018) - Standard Specification for Methane Thermophysical Property Tables
• Effective Date: 01-Nov-2023

Overview

ASTM D3956-23, Standard Specification for Methane Thermophysical Property Tables, establishes reliable thermophysical property data for methane. These comprehensive property tables are essential for calculating the pressure-volume-temperature (PVT), thermodynamic, and transport properties of methane, supporting the process design, simulation, and safe operation of facilities involving methane and natural gas. The standard provides tabulated properties for both gaseous and liquid methane over a broad range of temperatures (90 K to 600 K) and pressures (up to 30 MPa), including data for the equilibrium phase and saturation conditions.

Developed in collaboration with the National Institute of Standards and Technology (NIST), ASTM D3956-23 ensures data accuracy and consistency using reputable sources such as the REFPROP database, ensuring compatibility with international best practices under the WTO Technical Barriers to Trade (TBT) principles.

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Key Topics

• Thermophysical Property Tables: Three main tables covering:

  • Liquid-phase methane at liquid-vapor equilibrium (saturation)
  • Vapor-phase methane at liquid-vapor equilibrium (saturation)
  • Methane properties along isobars at selected temperature and pressure points

• Core Properties Provided:

  • Molar density
  • Molar enthalpy
  • Molar entropy
  • Heat capacities at constant volume and pressure
  • Speed of sound
  • Viscosity
  • Thermal conductivity

• Measurement Units: All data are provided in SI units, with additional units available via NIST REFPROP software for enhanced usability.

• Reference States: The standard defines enthalpy and entropy reference states at 298.15 K and 0.101325 MPa, essential for thermodynamic calculations.

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Applications

ASTM D3956-23 offers significant practical value for a variety of industries and technical domains:

• Natural Gas Infrastructure: Enables design and optimization of pipelines, compressors, LNG plants, and storage facilities by providing accurate methane properties for simulations and safety analyses.

• Process Engineering and Simulation: Supports the calculation of phase equilibria, energy balances, and transport phenomena in chemical and petrochemical plants handling methane or methane-rich mixtures.

• Research and Development: Forms a reliable data foundation for academic and industrial research in thermodynamics, fluid mechanics, and physical chemistry related to methane.

• Regulatory Compliance: Assists organizations in meeting international standardization requirements and demonstrating due diligence in process safety and performance validation.

• Mixtures and Modeling: While primarily for pure methane, the tables are valuable for modeling methane-containing mixtures, aiding in the development of broader natural gas property databases.

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Related Standards

Professionals using ASTM D3956-23 may also reference the following standards for a more holistic approach to methane and natural gas property evaluation:

• ASTM D4150 – Terminology Relating to Gaseous Fuels: Provides standardized terminology for the sector.
• NIST Standard Reference Database 23 (REFPROP): Source of underlying property equations and expanded data for both pure substances and mixtures.
• Relevant ISO, API, and GPA Standards – For global harmonization of natural gas measurement and handling.

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Keywords: methane property tables, thermophysical properties of methane, natural gas properties, ASTM D3956-23, methane PVT data, thermodynamic properties, transport properties, NIST REFPROP

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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3956 − 23
Standard Specification for
Methane Thermophysical Property Tables
This standard is issued under the fixed designation D3956; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Terminology
4.1 Definitions:
1.1 The thermophysical property tables for methane are for
4.1.1 For definitions of general terms used in D03 Gaseous
use in the calculation of the pressure-volume-temperature
Fuels standards, refer to Terminology D4150.
(PVT), thermodynamic, and transport properties of methane
4.2 Abbreviations:
for process design and operations. Three tables are provided for
4.2.1 LNG—Liquefied Natural Gas
gaseous and liquid methane at temperatures between 90 K and
600 K at pressures to 30 MPa. Two tables provide properties
5. Tables
for the liquid and vapor phases at liquid-vapor equilibrium
5.1 Thermophysical Properties of Methane Liquid at
(saturation properties). The third table provides properties at
Liquid-Vapor Equilibrium, in SI units.
selected T, p points for the equilibrium phase at those condi-
tions. The tables were developed by the National Institute of
5.2 Thermophysical Properties of Methane Vapor at Liquid-
Standards and Technology from a Standard Reference Data-
Vapor Equilibrium, in SI units.
base product REFPROP, version 10.0 .
5.3 Thermophysical Properties of Methane Along Isobars,
1.2 This international standard was developed in accor-
in SI units.The tabulated properties are:
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
-1
ρ = molar density (mol·L )
Development of International Standards, Guides and Recom-
-1
H = molar enthalpy (J·mol )
mendations issued by the World Trade Organization Technical
-1 -1
S = molar entropy (J·K ·mol )
Barriers to Trade (TBT) Committee.
-1 -1
C = constant volume molar heat capacity (J·K ·mol )
v
-1 -1
C = constant pressure molar heat capacity (J·K ·mol )
p
2. Referenced Documents
-1
c = speed of sound (m·s )
2.1 ASTM Standards: η = viscosity (μPa·s)
-1 -1
λ = thermal conductivity (mW·m ·K )
D4150 Terminology Relating to Gaseous Fuels
These tables were produced by equations from a computer
3. Applicability
package, “NIST Standard Reference Database 23; Reference
Fluid Thermodynamic and Transport Properties Database
3.1 These tables apply directly only to pure gaseous meth-
(REFPROP): Version 10.0.” A wide selection of units (SI units,
ane. However, it is expected that they may find substantial use
engineering units, chemical units) and additional properties are
in mathematical models and tables for the thermophysical
available with this program.
properties of mixtures containing methane.
6. Additional Information
6.1 The Reference States for enthalpy and entropy have
This specification is under the jurisdiction of ASTM Committee D03 on
been updated in this version of the standard.
Gaseous Fuels and is the direct responsibility of Subcommittee D03.08 on
Reference state properties are required to calculate certain of
Thermophysical Properties.
Current edition approved Nov. 1, 2023. Published December 2023. Originally the thermodynamic properties (enthalpy, entropy, etc.) from an
approved in 1982. Last previous edition approved in 2018 as D3956 – 12 (2018).
equation of state formulation. The reference state properties
DOI: 10.1520/D3956-23.
used to generate the tables in this specification are: enthalpy, H,
Lemmon, E.W., Bell, I.H., Huber, M.L., McLinden, M.O. NIST Standard
and entropy, S, at 298.15 K and 0.101325 MPa (H = 10018
Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-
REFPROP, Version 10.0, National Institute of Standards and Technology, Standard J ⁄mol and S = 186.266 J/(mol K)). The molar mass of methane
Reference Data Program, Gaithersburg, 2018.
is 16.043 g/mol.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Available from Standard Reference Data, National Institute of Standards and
the ASTM website. Technology (NIST), 100 Bureau Drive, Stop 3460, Gaithersburg, MD 20899.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3956 − 23
7. Keywords
7.1 methane gas tables; natural gas; thermodynamic prop-
erties of methane; transport properties of methane
D3956 − 23
TABLE 1 Thermophysical Properties of Methane Liquid at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 28.141 –5732.1 67.803 34.775 54.029 1538.5 193.53 211.18
92 0.013801 28.033 –5661.7 68.572 34.641 54.102 1526.7 186.13 209.64
94 0.017613 27.866 –5553.3 69.737 34.445 54.226 1508.4 175.87 207.2
96 0.022233 27.698 –5444.6 70.879 34.258 54.366 1489.8 166.73 204.71
98 0.027778 27.528 –5335.6 72.001 34.08 54.517 1471 158.48 202.16
100 0.034376 27.357 –5226.2 73.103 33.908 54.681 1452 150.97 199.56
102 0.042160 27.185 –5116.5 74.187 33.741 54.854 1432.9 144.06 196.92
104 0.051275 27.01 –5006.4 75.253 33.579 55.039 1413.6 137.66 194.24
106 0.061868 26.835 –4895.8 76.302 33.421 55.234 1394.1 131.71 191.53
108 0.074099 26.657 –4784.9 77.335 33.266 55.439 1374.5 126.14 188.79
110 0.08813 26.478 –4673.4 78.352 33.115 55.656 1354.7 120.9 186.02
112 0.10413 26.297 –4561.5 79.355 32.966 55.885 1334.8 115.97 183.24
114 0.12228 26.113 –4449.1 80.344 32.82 56.127 1314.7 111.3 180.44
116 0.14275 25.928 –4336.1 81.319 32.677 56.383 1294.4 106.88 177.62
118 0.16574 25.74 –4222.6 82.282 32.537 56.653 1274 102.68 174.79
120 0.19143 25.551 –4108.4 83.233 32.4 56.941 1253.5 98.68 171.95
122 0.22002 25.358 –3993.7 84.172 32.265 57.246 1232.7 94.873 169.11
124 0.2517 25.163 –3878.2 85.101 32.133 57.571 1211.9 91.243 166.26
126 0.28667 24.966 –3762 86.019 32.005 57.917 1190.8 87.777 163.41
128 0.32514 24.765 –3645.1 86.928 31.879 58.288 1169.5 84.465 160.55
130 0.36732 24.562 –3527.3 87.827 31.757 58.684 1148.1 81.298 157.69
132 0.41341 24.355 –3408.7 88.718 31.639 59.11 1126.4 78.266 154.83
134 0.46363 24.145 –3289.2 89.601 31.525 59.567 1104.6 75.363 151.98
136 0.51819 23.931 –3168.7 90.477 31.414 60.06 1082.5 72.581 149.12
138 0.5773 23.713 –3047.2 91.346 31.308 60.593 1060.2 69.913 146.27
140 0.64118 23.491 –2924.5 92.209 31.206 61.169 1037.7 67.353 143.41
142 0.71006 23.265 –2800.7 93.066 31.109 61.795 1014.9 64.896 140.56
144 0.78415 23.034 –2675.6 93.918 31.018 62.477 991.81 62.536 137.71
146 0.86368 22.798 –2549.2 94.767 30.932 63.221 968.46 60.267 134.87
148 0.94887 22.556 –2421.3 95.611 30.852 64.036 944.81 58.085 132.02
150 1.0400 22.309 –2291.8 96.453 30.78 64.932 920.85 55.984 129.18
152 1.1372 22.055 –2160.6 97.293 30.714 65.922 896.54 53.96 126.33
154 1.2408 21.794 –2027.5 98.132 30.656 67.019 871.87 52.008 123.49
156 1.3509 21.526 –1892.5 98.97 30.608 68.241 846.82 50.124 120.64
158 1.4680 21.249 –1755.2 99.81 30.569 69.611 821.35 48.303 117.79
160 1.5921 20.964 –1615.5 100.65 30.541 71.156 795.43 46.541 114.93
162 1.7235 20.668 –1473.2 101.5 30.526 72.912 769.03 44.832 112.06
164 1.8626 20.36 –1327.9 102.35 30.525 74.924 742.1 43.172 109.18
166 2.0096 20.04 –1179.3 103.2 30.541 77.252 714.59 41.556 106.29
168 2.1647 19.706 –1027 104.07 30.576 79.979 686.42 39.978 103.38
170 2.3283 19.355 –870.41 104.94 30.634 83.218 657.52 38.432 100.46
172 2.5007 18.984 –708.97 105.84 30.721 87.13 627.77 36.911 97.508
174 2.6822 18.591 –541.82 106.75 30.843 91.954 597.05 35.407 94.534
176 2.8732 18.17 –367.86 107.68 31.011 98.06 565.18 33.911 91.535
178 3.0740 17.716 –185.61 108.65 31.24 106.05 531.94 32.411 88.513
180 3.2852 17.218 7.086 109.66 31.554 116.99 497.01 30.888 85.482
182 3.5071 16.664 213.47 110.72 31.996 132.94 459.94 29.32 82.478
184 3.7405 16.028 438.97 111.88 32.641 158.52 420 27.665 79.598
186 3.9860 15.267 693.95 113.17 33.654 206.68 375.88 25.848 77.15
188 4.2448 14.27 1003.7 114.73 35.503 332.7 324.57 23.683 76.438
190 4.5186 12.515 1488.3 117.19 41.746 1508.2 250.31 20.291 94.152
D3956 − 23
TABLE 2 Thermophysical Properties of Methane Vapor at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 0.015641 2999.3 164.07 25.244 33.851 249.13 3.598 8.7991
92 0.013801 0.018199 3040 163.16 25.272 33.916 250.76 3.6414 8.9478
94 0.017613 0.02277 3102.1 161.82 25.32 34.025 253.2 3.7087 9.1797
96 0.022233 0.028198 3163.6 160.55 25.372 34.145 255.57 3.7765 9.4154
98 0.027778 0.034587 3224.3 159.35 25.427 34.279 257.87 3.8449 9.6551
100 0.034376 0.042048 3284.2 158.21 25.487 34.425 260.09 3.9139 9.8989
102 0.04216 0.050695 3343.3 157.13 25.55 34.585 262.24 3.9832 10.147
104 0.051275 0.060649 3401.5 156.1 25.617 34.76 264.31 4.053 10.4
106 0.061868 0.072034 3458.7 155.12 25.688 34.95 266.29 4.1232 10.657
108 0.074099 0.08498 3514.8 154.18 25.763 35.156 268.2 4.1938 10.92
110 0.08813 0.099622 3569.9 153.29 25.842 35.378 270.01 4.2647 11.188
112 0.10413 0.1161 3623.8 152.44 25.925 35.619 271.75 4.336 11.461
114 0.12228 0.13455 3676.5 151.62 26.011 35.879 273.39 4.4077 11.74
116 0.14275 0.15514 3727.9 150.84 26.102 36.159 274.94 4.4797 12.026
118 0.16574 0.17801 3777.9 150.08 26.196 36.461 276.4 4.5521 12.318
120 0.19143 0.20332 3826.5 149.36 26.295 36.786 277.76 4.625 12.617
122 0.22002 0.23125 3873.6 148.66 26.397 37.137 279.03 4.6983 12.923
124 0.2517 0.26197 3919.1 147.98 26.505 37.514 280.21 4.7721 13.237
126 0.28667 0.29567 3963 147.33 26.616 37.922 281.28 4.8465 13.56
128 0.32514 0.33254 4005.1 146.69 26.733 38.361 282.25 4.9215 13.891
130 0.36732 0.37278 4045.5 146.08 26.854 38.836 283.13 4.9972 14.232
132 0.41341 0.41662 4083.9 145.48 26.981 39.35 283.9 5.0738 14.583
134 0.46363 0.46428 4120.4 144.9 27.113 39.907 284.57 5.1512 14.944
136 0.51819 0.51601 4154.7 144.33 27.252 40.511 285.13 5.2297 15.317
138 0.5773 0.57209 4186.9 143.77 27.397 41.169 285.58 5.3094 15.703
140 0.64118 0.63279 4216.8 143.22 27.549 41.885 285.93 5.3904 16.102
142 0.71006 0.69843 4244.2 142.68 27.709 42.668 286.16 5.473 16.515
144 0.78415 0.76935 4269.2 142.15 27.877 43.525 286.29 5.5573 16.945
146 0.86368 0.84593 4291.4 141.62 28.054 44.467 286.3 5.6436 17.391
148 0.94887 0.92857 4310.8 141.1 28.241 45.507 286.19 5.7323 17.857
150 1.04 1.0177 4327.2 140.58 28.439 46.657 285.97 5.8236 18.344
152 1.1372 1.114 4340.5 140.06 28.649 47.936 285.63 5.9179 18.854
154 1.2408 1.2178 4350.3 139.55 28.872 49.365 285.16 6.0157 19.39
156 1.3509 1.3299 4356.4 139.03 29.11 50.971 284.57 6.1176 19.957
158 1.468 1.4511 4358.7 138.51 29.363 52.785 283.86 6.2242 20.557
160 1.5921 1.5821 4356.7 137.98 29.636 54.849 283.01 6.3362 21.197
162 1.7235 1.7241 4350.2 137.44 29.928 57.217 282.03 6.4546 21.884
164 1.8626 1.8782 4338.6 136.9 30.244 59.958 280.91 6.5803 22.625
166 2.0096 2.0459 4321.5 136.34 30.588 63.165 279.65 6.7148 23.433
168 2.1647 2.2289 4298.2 135.77 30.962 66.963 278.23 6.8598 24.322
170 2.3283 2.4294 4268.1 135.17 31.374 71.527 276.66 7.0175 25.314
172 2.5007 2.65 4230 134.55 31.829 77.111 274.93 7.1906 26.436
174 2.6822 2.8944 4182.9 133.9 32.337 84.089 273.02 7.3827 27.732
176 2.8732 3.1671 4125.2 133.21 32.912 93.049 270.92 7.5989 29.263
178 3.074 3.4744 4054.5 132.47 33.57 104.95 268.6 7.846 31.127
180 3.2852 3.8257 3967.9 131.66 34.338 121.51 266.04 8.1346 33.484
182 3.5071 4.2349 3860.4 130.76 35.257 146.04 263.17 8.4811 36.62
184 3.7405 4.7255 3724.4 129.73 36.397 185.97 259.89 8.9141 41.1
186 3.986 5.3422 3545 128.5 37.893 262.03 255.97 9.4902 48.246
188 4.2448 6.1945 3286.5 126.88 40.109 461.61 250.72 10.354 62.294
190 4.5186 7.8027 2783.9 124.01 45.796 2259 238.55 12.237 120.52
D3956 − 23
TABLE 3 Thermophysical Properties of Methane Along Isobars
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
Pressure = 0.1 MPa
92 28.037 –5659.5 68.563 34.645 54.093 1527.3 186.43 209.71
100 27.36 –5224.6 73.096 33.911 54.672 1452.6 151.12 199.62
110 26.478 –4673.2 78.35 33.115 55.654 1354.8 120.92 186.04
111.51 26.341 –4589.1 79.109 33.003 55.828 1339.7 117.16 183.93
111.51 0.11186 3610.7 152.64 25.904 35.558 271.33 4.3184 11.393
120 0.10316 3909.4 155.23 25.568 34.879 282.84 4.6534 12.31
130 0.094632 4255.8 158 25.364 34.427 295.56 5.0442 13.444
140 0.087479 4598.5 160.54 25.25 34.15 307.59 5.4326 14.602
150 0.081375 4939.1 162.89 25.186 33.972 319.04 5.8185 15.771
160 0.076095 5278.2 165.08 25.154 33.858 330.01 6.2015 16.945
170 0.071476 5616.4 167.13 25.146 33.788 340.55 6.5812 18.12
180 0.067399 5954.1 169.06 25.161 33.755 350.71 6.9573 19.301
190 0.06377 6291.6 170.88 25.198 33.754 360.51 7.3293 20.501
200 0.060518 6629.3 172.62 25.259 33.784 369.98 7.6973 21.648
210 0.057586 6967.4 174.27 25.345 33.845 379.14 8.0609 22.817
220 0.054929 7306.3 175.84 25.459 33.937 388.01 8.42 24
230 0.052508 7646.2 177.35 25.602 34.063 396.6 8.7748 25.197
240 0.050295 7987.6 178.81 25.776 34.221 404.91 9.1251 26.412
250 0.048261 8330.8 180.21 25.981 34.414 412.96 9.4709 27.647
260 0.046387 8676 181.56 26.218 34.64 420.77 9.8124 28.904
270 0.044655 9023.7 182.87 26.487 34.899 428.34 10.149 30.188
280 0.043047 9374.1 184.15 26.788 35.192 435.68 10.482 31.499
290 0.041552 9727.6 185.39 27.119 35.515 442.81 10.811 32.841
300 0.040158 10085 186.6 27.479 35.869 449.74 11.136 34.214
310 0.038855 10445 187.78 27.866 36.251 456.48 11.456 35.62
320 0.037635 10810 188.94 28.28 36.659 463.05 11.773 37.059
330 0.036489 11178 190.07 28.718 37.092 469.45 12.085 38.532
340 0.035411 11552 191.19 29.178 37.548 475.7 12.394 40.04
350 0.034395 11929 192.28 29.658 38.025 481.81 12.7 41.581
360 0.033436 12312 193.36 30.157 38.52 487.79 13.002 43.156
370 0.032529 12700 194.42 30.672 39.032 493.64 13.3 44.764
380 0.03167 13093 195.47 31.202 39.56 499.38 13.595 46.405
390 0.030855 13491 196.5 31.745 40.1 505.02 13.887 48.077
400 0.030082 13895 197.53 32.3 40.652 510.56 14.176 49.779
410 0.029346 14304 198.54 32.864 41.215 516.01 14.461 51.512
420 0.028646 14719 199.54 33.437 41.786 521.38 14.744 53.272
430 0.027978 15140 200.53 34.018 42.364 526.66 15.023 55.061
440 0.027341 15566 201.51 34.604 42.949 531.88 15.3 56.876
450 0.026732 15999 202.48 35.195 43.539 537.03 15.574 58.716
460 0.02615 16437 203.44 35.791 44.133 542.11 15.845 60.581
470 0.025593 16882 204.4 36.389 44.73 547.13 16.113 62.469
480 0.025059 17332 205.35 36.99 45.329 552.09 16.38 64.38
490 0.024546 17788 206.29 37.592 45.931 557 16.643 66.312
500 0.024055 18250 207.22 38.196 46.533 561.86 16.904 68.264
510 0.023583 18719 208.15 38.8 47.136 566.66 17.163 70.237
520 0.023129 19193 209.07 39.403 47.738 571.43 17.419 72.228
530 0.022692 19674 209.98 40.006 48.34 576.14 17.674 74.237
540 0.022271 20160 210.89 40.608 48.941 580.82 17.926 76.263
550 0.021866 20652 211.8 41.208 49.541 585.45 18.175 78.306
560 0.021475 21151 212.7 41.807 50.139 590.04 18.423 80.365
570 0.021098 21655 213.59 42.404 50.735 594.59 18.669 82.438
580 0.020734 22165 214.48 42.998 51.329 599.11 18.913 84.526
590 0.020382 22682 215.36 43.59 51.92 603.59 19.155 86.628
600 0.020042 23204 216.24 44.179 52.509 608.04 19.395 88.743
Pressure = 1 MPa
92 28.074 –5636.1 68.468 34.682 54.01 1533.5 189.65 210.52
100 27.403 –5202 72.993 33.95 54.562 1459.6 153.31 200.5
110 26.529 –4651.9 78.235 33.156 55.497 1363.2 122.5 187.02
120 25.606 –4091.1 83.114 32.437 56.733 1262.4 99.852 172.95
130 24.616 –3515.7 87.719 31.786 58.434 1156.6 82.137 158.57
140 23.532 –2919.7 92.134 31.22 60.937 1043.7 67.819 143.99
149.14 22.416 –2347.7 96.091 30.81 64.535 931.21 56.879 130.4
149.14 0.97852 4320.6 140.8 28.353 46.147 286.08 5.7839 18.131
150 0.96844 4360 141.07 28.165 45.565 287.76 5.827 18.161
160 0.8705 4792.5 143.86 26.991 41.516 305.18 6.2798 18.759
170 0.79596 5196.6 146.31 26.47 39.472 320.2 6.6918 19.629
180 0.73599 5584.4 148.53 26.161 38.186 333.74 7.0849 20.636
190 0.68611 5961.7 150.57 25.976 37.322 346.2 7.466 21.786
200 0.64363 6331.7 152.46 25.879 36.73 357.81 7.8383 22.739
210 0.60682 6696.9 154.25 25.85 36.325 368.73 8.2036 23.806
220 0.5745 7058.7 155.93 25.878 36.06 379.06 8.5629 24.914
230 0.54581 7418.4 157.53 25.956 35.903 388.88 8.9166 26.05
240 0.52011 7777.1 159.06 26.078 35.834 398.24 9.2652 27.214
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
250 0.49693 8135.4 160.52 26.242 35.84 407.2 9.609 28.404
260 0.47587 8494.1 161.92 26.446 35.911 415.79 9.9481 29.623
270 0.45665 8853.8 163.28 26.688 36.04 424.04 10.283 30.872
280 0.43902 9215.1 164.6 26.966 36.221 431.98 10.613 32.153
290 0.42278 9578.4 165.87 27.277 36.45 439.64 10.939 33.467
300 0.40776 9944.2 167.11 27.621 36.721 447.04 11.261 34.815
310 0.39381 10313 168.32 27.995 37.031 454.19 11.579 36.197
320 0.38084 10685 169.5 28.397 37.376 461.13 11.893 37.615
330 0.36872 11061 170.66 28.824 37.753 467.87 12.203 39.069
340 0.35738 11440 171.79 29.275 38.16 474.42 12.51 40.558
350 0.34675 11824 172.9 29.747 38.592 480.8 12.813 42.083
360 0.33674 12212 174 30.239 39.048 487.02 13.113 43.642
370 0.32732 12605 175.07 30.748 39.524 493.09 13.409 45.235
380 0.31842 13003 176.13 31.272 40.019 499.04 13.702 46.862
390 0.31001 13405 177.18 31.81 40.531 504.86 13.991 48.52
400 0.30205 13813 178.21 32.36 41.056 510.57 14.278 50.211
410 0.29449 14226 179.23 32.92 41.595 516.18 14.562 51.931
420 0.28731 14645 180.24 33.489 42.143 521.69 14.842 53.681
430 0.28048 15069 181.24 34.066 42.702 527.11 15.12 55.459
440 0.27397 15499 182.23 34.65 43.268 532.44 15.395 57.264
450 0.26776 15935 183.21 35.238 43.84 537.7 15.667 59.095
460 0.26184 16376 184.18 35.831 44.418 542.89 15.937 60.951
470 0.25617 16823 185.14 36.427 45.001 548.01 16.204 62.831
480 0.25075 17276 186.09 37.025 45.587 553.06 16.468 64.733
490 0.24556 17735 187.04 37.626 46.176 558.05 16.73 66.658
500 0.24058 18200 187.98 38.227 46.766 562.99 16.99 68.603
510 0.2358 18670 188.91 38.829 47.358 567.87 17.247 70.568
520 0.23121 19147 189.83 39.431 47.95 572.7 17.502 72.552
530 0.2268 19629 190.75 40.032 48.543 577.48 17.755 74.555
540 0.22255 20118 191.66 40.633 49.135 582.21 18.006 76.575
550 0.21847 20612 192.57 41.232 49.726 586.9 18.255 78.612
560 0.21453 21112 193.47 41.83 50.316 591.55 18.501 80.665
570 0.21073 21618 194.37 42.425 50.905 596.15 18.746 82.733
580 0.20707 22130 195.26 43.019 51.492 600.71 18.989 84.815
590 0.20353 22648 196.14 43.61 52.077 605.24 19.229 86.912
600 0.20012 23172 197.02 44.198 52.659 609.73 19.468 89.022
Pressure = 2 MPa
92 28.115 –5610.1 68.364 34.722 53.921 1540.4 193.22 211.4
100 27.45 –5176.8 72.88 33.992 54.445 1467.4 155.72 201.47
110 26.585 –4628.1 78.109 33.201 55.329 1372.3 124.23 188.1
120 25.674 -4069.3 82.97 32.483 56.489 1273.3 101.28 174.16
130 24.701 –3497 87.551 31.831 58.063 1169.7 83.443 159.94
140 23.641 –2905.8 91.931 31.258 60.331 1060.1 69.093 145.58
150 22.453 –2286.2 96.204 30.798 63.871 941.45 57.245 131.01
160 21.055 –1619.4 100.51 30.526 70.193 807.65 47.125 115.92
165.87 20.061 –1188.9 103.15 30.539 77.093 716.36 41.658 106.48
165.87 2.0348 4322.7 136.38 30.565 62.944 279.73 6.706 23.379
170 1.9032 4565.8 137.82 29.192 55.613 290.52 6.9116 23.04
180 1.677 5075.7 140.74 27.775 47.612 311.34 7.3293 23.101
190 1.518 5531.1 143.2 27.121 43.836 328.4 7.7102 23.852
200 1.3957 5957.4 145.39 26.741 41.587 343.3 8.0758 24.329
210 1.2969 6365.5 147.38 26.521 40.122 356.7 8.4324 25.179
220 1.2143 6761.4 149.22 26.415 39.129 368.98 8.7824 26.138
230 1.1437 7149.1 150.95 26.394 38.447 380.37 9.1271 27.163
240 1.0823 7531.1 152.57 26.443 37.986 391.03 9.4672 28.239
250 1.0283 7909.3 154.12 26.552 37.689 401.07 9.8029 29.357
260 0.98014 8285.3 155.59 26.712 37.521 410.57 10.135 30.515
270 0.93689 8660.1 157.01 26.919 37.457 419.61 10.462 31.712
280 0.89775 9034.7 158.37 27.168 37.48 428.22 10.786 32.948
290 0.8621 9409.9 159.68 27.457 37.576 436.47 11.106 34.221
300 0.82945 9786.5 160.96 27.781 37.736 444.38 11.423 35.534
310 0.7994 10165 162.2 28.138 37.951 452 11.736 36.884
320 0.77164 10546 163.41 28.526 38.215 459.34 12.045 38.273
330 0.7459 10929 164.59 28.941 38.521 466.43 12.351 39.701
340 0.72194 11316 165.75 29.382 38.865 473.3 12.653 41.166
350 0.69958 11707 166.88 29.845 39.243 479.96 12.952 42.668
360 0.67864 12101 167.99 30.328 39.65 486.45 13.248 44.207
370 0.659 12500 169.08 30.83 40.084 492.76 13.541 45.781
380 0.64052 12903 170.16 31.348 40.54 498.91 13.831 47.39
390 0.62311 13311 171.22 31.881 41.017 504.93 14.117 49.033
400 0.60667 13723 172.26 32.425 41.511 510.82 14.401 50.708
410 0.59111 14141 173.29 32.981 42.021 516.59 14.681 52.414
420 0.57636 14564 174.31 33.546 42.544 522.24 14.959 54.15
430 0.56236 14992 175.32 34.119 43.079 527.8 15.234 55.916
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
440 0.54905 15425 176.31 34.699 43.624 533.26 15.507 57.709
450 0.53638 15864 177.3 35.285 44.176 538.64 15.777 59.528
460 0.52431 16309 178.28 35.874 44.736 543.93 16.044 61.373
470 0.51278 16759 179.25 36.468 45.302 549.15 16.309 63.243
480 0.50176 17215 180.21 37.064 45.873 554.3 16.571 65.136
490 0.49123 17677 181.16 37.662 46.447 559.38 16.832 67.051
500 0.48113 18144 182.1 38.261 47.024 564.39 17.089 68.987
510 0.47146 18617 183.04 38.862 47.604 569.35 17.345 70.944
520 0.46218 19096 183.97 39.462 48.185 574.25 17.598 72.92
530 0.45326 19581 184.89 40.061 48.766 579.09 17.849 74.915
540 0.4447 20071 185.81 40.66 49.349 583.89 18.098 76.928
550 0.43645 20568 186.72 41.258 49.931 588.63 18.346 78.958
560 0.42852 21070 187.63 41.854 50.512 593.33 18.591 81.004
570 0.42087 21578 188.52 42.449 51.093 597.98 18.834 83.065
580 0.4135 22092 189.42 43.041 51.672 602.59 19.075 85.142
590 0.40638 22611 190.31 43.631 52.249 607.16 19.315 87.232
600 0.39951 23137 191.19 44.218 52.825 611.69 19.552 89.336
Pressure = 3 MPa
92 28.156 –5584.1 68.261 34.762 53.835 1547.1 196.78 212.29
100 27.496 –5151.6 72.769 34.034 54.331 1475 158.13 202.43
110 26.64 –4604.2 77.984 33.245 55.169 1381.2 125.95 189.17
120 25.74 –4047.3 82.829 32.528 56.258 1283.8 102.7 175.35
130 24.783 –3477.9 87.387 31.876 57.717 1182.4 84.725 161.29
140 23.746 –2891 91.735 31.298 59.781 1075.8 70.336 147.13
150 22.595 –2278.7 95.958 30.823 62.908 961.61 58.513 132.85
160 21.264 –1625.9 100.17 30.505 68.179 835.51 48.503 118.24
170 19.6 –897.09 104.58 30.508 79.233 687.08 39.558 102.68
177.27 17.885 –252.81 108.29 31.148 102.88 544.18 32.957 89.612
177.27 3.3584 4081.8 132.74 33.32 100.21 269.47 7.7522 30.404
180 3.1212 4324.3 134.1 31.392 80.386 280.27 7.8406 28.964
190 2.6146 4985.2 137.68 28.798 57.334 307.5 8.1418 27.597
200 2.3157 5515.5 140.4 27.846 49.701 327.51 8.4522 26.708
210 2.1029 5990.8 142.72 27.328 45.725 344.24 8.769 27.049
220 1.9386 6435 144.79 27.032 43.298 358.9 9.0885 27.711
230 1.8054 6859.5 146.68 26.883 41.704 372.09 9.4087 28.537
240 1.694 7270.8 148.43 26.84 40.619 384.17 9.7285 29.466
250 1.5987 7673 150.07 26.881 39.875 395.36 10.047 30.472
260 1.5157 8069.1 151.62 26.99 39.373 405.81 10.364 31.54
270 1.4425 8461.1 153.1 27.157 39.051 415.63 10.679 32.663
280 1.3772 8850.6 154.52 27.375 38.87 424.92 10.992 33.836
290 1.3185 9238.9 155.88 27.638 38.802 433.75 11.302 35.057
300 1.2653 9627 157.2 27.942 38.827 442.16 11.61 36.322
310 1.2168 10016 158.47 28.282 38.93 450.21 11.915 37.632
320 1.1723 10406 159.71 28.655 39.098 457.93 12.217 38.985
330 1.1314 10798 160.92 29.058 39.324 465.36 12.516 40.38
340 1.0934 11192 162.09 29.487 39.598 472.53 12.813 41.816
350 1.0582 11590 163.25 29.941 39.915 479.47 13.106 43.292
360 1.0254 11991 164.38 30.417 40.269 486.19 13.397 44.807
370 0.99476 12395 165.48 30.911 40.656 492.72 13.685 46.359
380 0.96602 12804 166.57 31.423 41.071 499.07 13.97 47.948
390 0.93902 13217 167.65 31.95 41.511 505.27 14.253 49.571
400 0.9136 13634 168.7 32.49 41.972 511.32 14.533 51.229
410 0.88961 14056 169.74 33.041 42.452 517.23 14.81 52.919
420 0.86692 14483 170.77 33.602 42.948 523.03 15.084 54.64
430 0.84544 14915 171.79 34.171 43.458 528.71 15.356 56.391
440 0.82505 15353 172.8 34.748 43.98 534.29 15.626 58.17
450 0.80567 15795 173.79 35.33 44.513 539.77 15.893 59.977
460 0.78723 16243 174.77 35.917 45.054 545.16 16.158 61.81
470 0.76966 16696 175.75 36.508 45.603 550.47 16.42 63.669
480 0.75289 17155 176.71 37.102 46.158 555.7 16.68 65.551
490 0.73686 17619 177.67 37.698 46.717 560.85 16.938 67.456
500 0.72154 18089 178.62 38.295 47.281 565.94 17.193 69.383
510 0.70686 18565 179.56 38.893 47.848 570.96 17.447 71.33
520 0.69279 19046 180.5 39.492 48.417 575.93 17.698 73.298
530 0.67929 19533 181.43 40.09 48.988 580.83 17.947 75.285
540 0.66633 20026 182.35 40.687 49.56 585.68 18.195 77.29
550 0.65387 20525 183.26 41.284 50.133 590.47 18.44 79.312
560 0.64188 21029 184.17 41.879 50.706 595.22 18.683 81.351
570 0.63034 21539 185.07 42.472 51.278 599.92 18.925 83.405
580 0.61921 22054 185.97 43.063 51.849 604.57 19.165 85.475
590 0.60849 22576 186.86 43.651 52.42 609.18 19.402 87.559
600 0.59814 23103 187.75 44.238 52.988 613.74 19.639 89.657
Pressure = 5 MPa
92 28.236 –5531.900 68.057 34.841 53.670 1560.400 2
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3956 − 12 (Reapproved 2018) D3956 − 23
Standard Specification for
Methane Thermophysical Property Tables
This standard is issued under the fixed designation D3956; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 The thermophysical property tables for methane are for use in the calculation of the pressure-volume-temperature (PVT),
thermodynamic, and transport properties of methane for process design and operations. Three tables are provided for gaseous and
liquid methane at temperatures between 90 K and 600K600 K at pressures to 30 MPa. Two tables provide properties for the liquid
and vapor phases at liquid-vapor equilibrium (saturation properties). The third table provides properties at selected T,p points for
the equilibrium phase at those conditions. The tables were developed by the National Institute of Standards and Technology from
a Standard Reference Database product REFPROP, version 9.0.10.0 .
1.2 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D4150 Terminology Relating to Gaseous Fuels
3. Applicability
3.1 These tables apply directly only to pure gaseous methane. However, it is expected that they may find substantial use in
mathematical models and tables for the thermophysical properties of mixtures containing methane.
4. Terminology
4.1 Definitions:
4.1.1 For definitions of general terms used in D03 Gaseous Fuels standards, refer to Terminology D4150.
4.2 Abbreviations:
4.2.1 LNG—Liquefied Natural Gas
5. Tables
5.1 Thermophysical Properties of Methane Liquid at Liquid-Vapor Equilibrium, in SI units.
This specification is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.08 on Thermophysical
Properties.
Current edition approved April 1, 2018Nov. 1, 2023. Published May 2018December 2023. Originally approved in 1982. Last previous edition approved in 20072018 as
D3956 – 12.D3956 – 12 (2018). DOI: 10.1520/D3956-12R18.10.1520/D3956-23.
Lemmon, E.W., Bell, I.H., Huber, M.L., McLinden, M.O. NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP,
Version 10.0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2018.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3956 − 23
5.2 Thermophysical Properties of Methane Vapor at Liquid-Vapor Equilibrium, in SI units.
3.3 Thermophysical Properties of Methane Along Isobars, in SI units.
5.3 Thermophysical Properties of Methane Along Isobars, The tabulated properties are:in SI units.The tabulated properties are:
-1
ρ = molar density (mol·L )
-1
H = molar enthalpy (J·mol )
-1 -1
S = molar entropy (J·K ·mol )
-1 -1
C = constant volume molar heat capacity (J·K ·mol )
v
-1 -1
C = constant pressure molar heat capacity (J·K ·mol )
p
-1
c = speed of sound (m·s )
η = viscosity (μPa·s)
-1 -1
λ = thermal conductivity (mW·m ·K )
These tables were produced by equations from a computer package, “NIST Standard Reference Database 23; Reference Fluid
Thermodynamic and Transport Properties Database (REFPROP): Version 10.0.” A wide selection of units (SI units, engineering
units, chemical units) and additional properties are available with this program.
3.5 These tables were produced by equations from a computer package, “NIST Standard Reference Database 23; Reference Fluid
Thermodynamic and Transport Properties Database (REFPROP): Version 9.0.” A wide selection of units (SI units, engineering
units, chemical units) and additional properties are available with this program.
6. Additional Information
6.1 The Reference States for enthalpy and entropy have been updated in this version of the standard.
Reference state properties are required to calculate certain of the thermodynamic properties (enthalpy, entropy, etc.) from an
equation of state formulation. The reference state properties used to generate the tables in this specification are: enthalpy, H, and
entropy, S, at 298.15 K and 0.101325 MPa (H = 10018 J ⁄mol and S = 186.266 J/(mol K)). The molar mass of methane is 16.043
g/mol.
7. Keywords
7.1 methane gas tables; natural gas; thermodynamic properties of methane; transport properties of methane
Available from Standard Reference Data, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Stop 3460, Gaithersburg, MD 20899.
D3956 − 23
TABLE 1 Thermophysical Properties of Methane Liquid at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 28.141 84267 67.794 34.775 54.029 1538.5 193.53 211.18
92 0.013801 28.033 84338 68.563 34.641 54.102 1526.7 186.13 209.64
94 0.017613 27.866 84446 69.728 34.445 54.226 1508.4 175.87 207.20
96 0.022233 27.698 84555 70.870 34.258 54.366 1489.8 166.73 204.71
98 0.027778 27.528 84664 71.992 34.08 54.517 1471.0 158.48 202.16
100 0.034376 27.357 84773 73.095 33.908 54.681 1452.0 150.97 199.56
102 0.04216 27.185 84883 74.178 33.741 54.854 1432.9 144.06 196.92
104 0.051275 27.010 84993 75.244 33.579 55.039 1413.6 137.66 194.24
106 0.061868 26.835 85103 76.293 33.421 55.234 1394.1 131.71 191.53
108 0.074099 26.657 85214 77.326 33.266 55.439 1374.5 126.14 188.79
110 0.08813 26.478 85326 78.343 33.115 55.656 1354.7 120.90 186.02
112 0.10413 26.297 85438 79.346 32.966 55.885 1334.8 115.97 183.24
114 0.12228 26.113 85550 80.335 32.82 56.127 1314.7 111.30 180.44
116 0.14275 25.928 85663 81.310 32.677 56.383 1294.4 106.88 177.62
118 0.16574 25.740 85777 82.273 32.537 56.653 1274.0 102.68 174.79
120 0.19143 25.551 85891 83.224 32.4 56.941 1253.5 98.680 171.95
122 0.22002 25.358 86006 84.164 32.265 57.246 1232.7 94.874 169.11
124 0.2517 25.163 86121 85.092 32.133 57.571 1211.9 91.243 166.26
126 0.28667 24.966 86237 86.010 32.005 57.917 1190.8 87.777 163.41
128 0.32514 24.765 86354 86.919 31.879 58.288 1169.5 84.465 160.55
130 0.36732 24.562 86472 87.819 31.757 58.684 1148.1 81.298 157.69
132 0.41341 24.355 86591 88.710 31.639 59.110 1126.4 78.267 154.83
134 0.46363 24.145 86710 89.593 31.525 59.567 1104.6 75.363 151.98
136 0.51819 23.931 86831 90.468 31.414 60.060 1082.5 72.581 149.12
138 0.57730 23.713 86952 91.337 31.308 60.593 1060.2 69.913 146.27
140 0.64118 23.491 87075 92.200 31.206 61.169 1037.7 67.354 143.41
142 0.71006 23.265 87199 93.057 31.109 61.795 1014.9 64.896 140.56
144 0.78415 23.034 87324 93.910 31.018 62.477 991.81 62.536 137.71
146 0.86368 22.798 87450 94.758 30.932 63.221 968.46 60.267 134.87
148 0.94887 22.556 87578 95.603 30.852 64.036 944.81 58.085 132.02
150 1.0400 22.309 87707 96.444 30.78 64.932 920.85 55.984 129.18
152 1.1372 22.055 87839 97.284 30.714 65.922 896.54 53.960 126.33
154 1.2408 21.794 87972 98.123 30.656 67.019 871.87 52.008 123.49
156 1.3509 21.526 88107 98.961 30.608 68.241 846.82 50.124 120.64
158 1.4680 21.249 88244 99.801 30.569 69.611 821.35 48.303 117.79
160 1.5921 20.964 88384 100.64 30.541 71.156 795.43 46.541 114.93
162 1.7235 20.668 88526 101.49 30.526 72.912 769.03 44.832 112.06
164 1.8626 20.360 88671 102.34 30.525 74.924 742.10 43.172 109.18
166 2.0096 20.040 88820 103.19 30.541 77.252 714.59 41.556 106.29
168 2.1647 19.706 88972 104.06 30.576 79.979 686.42 39.978 103.38
170 2.3283 19.355 89129 104.94 30.634 83.218 657.52 38.432 100.46
172 2.5007 18.984 89290 105.83 30.721 87.130 627.77 36.911 97.508
174 2.6822 18.591 89457 106.74 30.843 91.954 597.05 35.407 94.534
176 2.8732 18.170 89631 107.67 31.011 98.060 565.18 33.911 91.535
178 3.0740 17.716 89814 108.64 31.24 106.05 531.94 32.411 88.513
180 3.2852 17.218 90006 109.65 31.554 116.99 497.01 30.888 85.482
182 3.5071 16.664 90213 110.72 31.996 132.94 459.94 29.320 82.478
184 3.7405 16.028 90438 111.87 32.641 158.52 420.00 27.665 79.598
186 3.9860 15.267 90693 113.16 33.654 206.68 375.88 25.848 77.150
188 4.2448 14.270 91003 114.73 35.503 332.70 324.57 23.683 76.437
190 4.5186 12.515 91488 117.18 41.746 1508.2 250.31 20.291 94.151
TABLE 1 Thermophysical Properties of Methane Liquid at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 28.141 –5732.1 67.803 34.775 54.029 1538.5 193.53 211.18
92 0.013801 28.033 –5661.7 68.572 34.641 54.102 1526.7 186.13 209.64
94 0.017613 27.866 –5553.3 69.737 34.445 54.226 1508.4 175.87 207.2
96 0.022233 27.698 –5444.6 70.879 34.258 54.366 1489.8 166.73 204.71
98 0.027778 27.528 –5335.6 72.001 34.08 54.517 1471 158.48 202.16
100 0.034376 27.357 –5226.2 73.103 33.908 54.681 1452 150.97 199.56
102 0.042160 27.185 –5116.5 74.187 33.741 54.854 1432.9 144.06 196.92
104 0.051275 27.01 –5006.4 75.253 33.579 55.039 1413.6 137.66 194.24
106 0.061868 26.835 –4895.8 76.302 33.421 55.234 1394.1 131.71 191.53
108 0.074099 26.657 –4784.9 77.335 33.266 55.439 1374.5 126.14 188.79
110 0.08813 26.478 –4673.4 78.352 33.115 55.656 1354.7 120.9 186.02
112 0.10413 26.297 –4561.5 79.355 32.966 55.885 1334.8 115.97 183.24
114 0.12228 26.113 –4449.1 80.344 32.82 56.127 1314.7 111.3 180.44
116 0.14275 25.928 –4336.1 81.319 32.677 56.383 1294.4 106.88 177.62
118 0.16574 25.74 –4222.6 82.282 32.537 56.653 1274 102.68 174.79
120 0.19143 25.551 –4108.4 83.233 32.4 56.941 1253.5 98.68 171.95
122 0.22002 25.358 –3993.7 84.172 32.265 57.246 1232.7 94.873 169.11
D3956 − 23
TABLE 1 Continued
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
124 0.2517 25.163 –3878.2 85.101 32.133 57.571 1211.9 91.243 166.26
126 0.28667 24.966 –3762 86.019 32.005 57.917 1190.8 87.777 163.41
128 0.32514 24.765 –3645.1 86.928 31.879 58.288 1169.5 84.465 160.55
130 0.36732 24.562 –3527.3 87.827 31.757 58.684 1148.1 81.298 157.69
132 0.41341 24.355 –3408.7 88.718 31.639 59.11 1126.4 78.266 154.83
134 0.46363 24.145 –3289.2 89.601 31.525 59.567 1104.6 75.363 151.98
136 0.51819 23.931 –3168.7 90.477 31.414 60.06 1082.5 72.581 149.12
138 0.5773 23.713 –3047.2 91.346 31.308 60.593 1060.2 69.913 146.27
140 0.64118 23.491 –2924.5 92.209 31.206 61.169 1037.7 67.353 143.41
142 0.71006 23.265 –2800.7 93.066 31.109 61.795 1014.9 64.896 140.56
144 0.78415 23.034 –2675.6 93.918 31.018 62.477 991.81 62.536 137.71
146 0.86368 22.798 –2549.2 94.767 30.932 63.221 968.46 60.267 134.87
148 0.94887 22.556 –2421.3 95.611 30.852 64.036 944.81 58.085 132.02
150 1.0400 22.309 –2291.8 96.453 30.78 64.932 920.85 55.984 129.18
152 1.1372 22.055 –2160.6 97.293 30.714 65.922 896.54 53.96 126.33
154 1.2408 21.794 –2027.5 98.132 30.656 67.019 871.87 52.008 123.49
156 1.3509 21.526 –1892.5 98.97 30.608 68.241 846.82 50.124 120.64
158 1.4680 21.249 –1755.2 99.81 30.569 69.611 821.35 48.303 117.79
160 1.5921 20.964 –1615.5 100.65 30.541 71.156 795.43 46.541 114.93
162 1.7235 20.668 –1473.2 101.5 30.526 72.912 769.03 44.832 112.06
164 1.8626 20.36 –1327.9 102.35 30.525 74.924 742.1 43.172 109.18
166 2.0096 20.04 –1179.3 103.2 30.541 77.252 714.59 41.556 106.29
168 2.1647 19.706 –1027 104.07 30.576 79.979 686.42 39.978 103.38
170 2.3283 19.355 –870.41 104.94 30.634 83.218 657.52 38.432 100.46
172 2.5007 18.984 –708.97 105.84 30.721 87.13 627.77 36.911 97.508
174 2.6822 18.591 –541.82 106.75 30.843 91.954 597.05 35.407 94.534
176 2.8732 18.17 –367.86 107.68 31.011 98.06 565.18 33.911 91.535
178 3.0740 17.716 –185.61 108.65 31.24 106.05 531.94 32.411 88.513
180 3.2852 17.218 7.086 109.66 31.554 116.99 497.01 30.888 85.482
182 3.5071 16.664 213.47 110.72 31.996 132.94 459.94 29.32 82.478
184 3.7405 16.028 438.97 111.88 32.641 158.52 420 27.665 79.598
186 3.9860 15.267 693.95 113.17 33.654 206.68 375.88 25.848 77.15
188 4.2448 14.27 1003.7 114.73 35.503 332.7 324.57 23.683 76.438
190 4.5186 12.515 1488.3 117.19 41.746 1508.2 250.31 20.291 94.152
D3956 − 23
TABLE 2 Thermophysical Properties of Methane Vapor at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 0.015641 92999 164.06 25.244 33.851 249.13 3.5980 8.7991
92 0.013801 0.018199 93039 163.15 25.272 33.916 250.76 3.6414 8.9478
94 0.017613 0.022770 93101 161.81 25.32 34.025 253.20 3.7087 9.1797
96 0.022233 0.028198 93163 160.54 25.372 34.145 255.57 3.7765 9.4154
98 0.027778 0.034587 93224 159.34 25.427 34.279 257.87 3.8449 9.6551
100 0.034376 0.042048 93283 158.20 25.487 34.425 260.09 3.9139 9.8989
102 0.042160 0.050695 93343 157.12 25.550 34.585 262.24 3.9832 10.147
104 0.051275 0.060649 93401 156.09 25.617 34.760 264.31 4.0530 10.400
106 0.061868 0.072034 93458 155.11 25.688 34.950 266.29 4.1232 10.657
108 0.074099 0.084980 93514 154.18 25.763 35.156 268.20 4.1938 10.920
110 0.088130 0.099622 93569 153.28 25.842 35.378 270.01 4.2647 11.188
112 0.10413 0.11610 93623 152.43 25.925 35.619 271.75 4.3360 11.461
114 0.12228 0.13455 93676 151.61 26.011 35.879 273.39 4.4077 11.740
116 0.14275 0.15514 93727 150.83 26.102 36.159 274.94 4.4797 12.026
118 0.16574 0.17801 93777 150.07 26.196 36.461 276.40 4.5521 12.318
120 0.19143 0.20332 93826 149.35 26.295 36.786 277.76 4.6250 12.617
122 0.22002 0.23125 93873 148.65 26.397 37.137 279.03 4.6983 12.923
124 0.25170 0.26197 93918 147.97 26.505 37.514 280.21 4.7721 13.237
126 0.28667 0.29567 93962 147.32 26.616 37.922 281.28 4.8465 13.560
128 0.32514 0.33254 94004 146.69 26.733 38.361 282.25 4.9215 13.891
130 0.36732 0.37278 94045 146.07 26.854 38.836 283.13 4.9972 14.232
132 0.41341 0.41662 94083 145.47 26.981 39.350 283.90 5.0738 14.583
134 0.46363 0.46428 94120 144.89 27.113 39.907 284.57 5.1512 14.944
136 0.51819 0.51601 94154 144.32 27.252 40.511 285.13 5.2297 15.317
138 0.57730 0.57209 94186 143.76 27.397 41.169 285.58 5.3094 15.703
140 0.64118 0.63279 94216 143.21 27.549 41.885 285.93 5.3904 16.102
142 0.71006 0.69843 94243 142.67 27.709 42.668 286.16 5.4730 16.515
144 0.78415 0.76935 94268 142.14 27.877 43.525 286.29 5.5573 16.945
146 0.86368 0.84593 94291 141.61 28.054 44.467 286.30 5.6436 17.391
148 0.94887 0.92857 94310 141.09 28.241 45.507 286.19 5.7323 17.857
150 1.0400 1.0177 94326 140.57 28.439 46.657 285.97 5.8236 18.344
152 1.1372 1.1140 94340 140.05 28.649 47.936 285.63 5.9179 18.854
154 1.2408 1.2178 94350 139.54 28.872 49.365 285.16 6.0157 19.390
156 1.3509 1.3299 94356 139.02 29.110 50.971 284.57 6.1176 19.957
158 1.4680 1.4511 94358 138.50 29.363 52.785 283.86 6.2242 20.557
160 1.5921 1.5821 94356 137.97 29.636 54.849 283.01 6.3362 21.197
162 1.7235 1.7241 94349 137.43 29.928 57.217 282.03 6.4546 21.884
164 1.8626 1.8782 94338 136.89 30.244 59.958 280.91 6.5803 22.625
166 2.0096 2.0459 94321 136.33 30.588 63.165 279.65 6.7149 23.433
168 2.1647 2.2289 94297 135.76 30.962 66.963 278.23 6.8599 24.322
170 2.3283 2.4294 94267 135.16 31.374 71.527 276.66 7.0175 25.314
172 2.5007 2.6500 94229 134.54 31.829 77.111 274.93 7.1906 26.436
174 2.6822 2.8944 94182 133.89 32.337 84.089 273.02 7.3827 27.732
176 2.8732 3.1671 94124 133.20 32.912 93.049 270.92 7.5989 29.263
178 3.0740 3.4744 94054 132.46 33.570 104.95 268.60 7.8460 31.127
180 3.2852 3.8257 93967 131.65 34.338 121.51 266.04 8.1346 33.484
182 3.5071 4.2349 93860 130.75 35.257 146.04 263.17 8.4811 36.620
184 3.7405 4.7255 93724 129.73 36.397 185.97 259.89 8.9141 41.100
186 3.9860 5.3422 93544 128.49 37.893 262.03 255.97 9.4902 48.246
188 4.2448 6.1945 93286 126.87 40.109 461.61 250.72 10.354 62.294
190 4.5186 7.8027 92783 124.00 45.796 2259.0 238.55 12.237 120.52
TABLE 2 Thermophysical Properties of Methane Vapor at Liquid-Vapor Equilibrium
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
90.7 0.011705 0.015641 2999.3 164.07 25.244 33.851 249.13 3.598 8.7991
92 0.013801 0.018199 3040 163.16 25.272 33.916 250.76 3.6414 8.9478
94 0.017613 0.02277 3102.1 161.82 25.32 34.025 253.2 3.7087 9.1797
96 0.022233 0.028198 3163.6 160.55 25.372 34.145 255.57 3.7765 9.4154
98 0.027778 0.034587 3224.3 159.35 25.427 34.279 257.87 3.8449 9.6551
100 0.034376 0.042048 3284.2 158.21 25.487 34.425 260.09 3.9139 9.8989
102 0.04216 0.050695 3343.3 157.13 25.55 34.585 262.24 3.9832 10.147
104 0.051275 0.060649 3401.5 156.1 25.617 34.76 264.31 4.053 10.4
106 0.061868 0.072034 3458.7 155.12 25.688 34.95 266.29 4.1232 10.657
108 0.074099 0.08498 3514.8 154.18 25.763 35.156 268.2 4.1938 10.92
110 0.08813 0.099622 3569.9 153.29 25.842 35.378 270.01 4.2647 11.188
112 0.10413 0.1161 3623.8 152.44 25.925 35.619 271.75 4.336 11.461
114 0.12228 0.13455 3676.5 151.62 26.011 35.879 273.39 4.4077 11.74
116 0.14275 0.15514 3727.9 150.84 26.102 36.159 274.94 4.4797 12.026
118 0.16574 0.17801 3777.9 150.08 26.196 36.461 276.4 4.5521 12.318
120 0.19143 0.20332 3826.5 149.36 26.295 36.786 277.76 4.625 12.617
122 0.22002 0.23125 3873.6 148.66 26.397 37.137 279.03 4.6983 12.923
D3956 − 23
TABLE 2 Continued
T p ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K MPa mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
124 0.2517 0.26197 3919.1 147.98 26.505 37.514 280.21 4.7721 13.237
126 0.28667 0.29567 3963 147.33 26.616 37.922 281.28 4.8465 13.56
128 0.32514 0.33254 4005.1 146.69 26.733 38.361 282.25 4.9215 13.891
130 0.36732 0.37278 4045.5 146.08 26.854 38.836 283.13 4.9972 14.232
132 0.41341 0.41662 4083.9 145.48 26.981 39.35 283.9 5.0738 14.583
134 0.46363 0.46428 4120.4 144.9 27.113 39.907 284.57 5.1512 14.944
136 0.51819 0.51601 4154.7 144.33 27.252 40.511 285.13 5.2297 15.317
138 0.5773 0.57209 4186.9 143.77 27.397 41.169 285.58 5.3094 15.703
140 0.64118 0.63279 4216.8 143.22 27.549 41.885 285.93 5.3904 16.102
142 0.71006 0.69843 4244.2 142.68 27.709 42.668 286.16 5.473 16.515
144 0.78415 0.76935 4269.2 142.15 27.877 43.525 286.29 5.5573 16.945
146 0.86368 0.84593 4291.4 141.62 28.054 44.467 286.3 5.6436 17.391
148 0.94887 0.92857 4310.8 141.1 28.241 45.507 286.19 5.7323 17.857
150 1.04 1.0177 4327.2 140.58 28.439 46.657 285.97 5.8236 18.344
152 1.1372 1.114 4340.5 140.06 28.649 47.936 285.63 5.9179 18.854
154 1.2408 1.2178 4350.3 139.55 28.872 49.365 285.16 6.0157 19.39
156 1.3509 1.3299 4356.4 139.03 29.11 50.971 284.57 6.1176 19.957
158 1.468 1.4511 4358.7 138.51 29.363 52.785 283.86 6.2242 20.557
160 1.5921 1.5821 4356.7 137.98 29.636 54.849 283.01 6.3362 21.197
162 1.7235 1.7241 4350.2 137.44 29.928 57.217 282.03 6.4546 21.884
164 1.8626 1.8782 4338.6 136.9 30.244 59.958 280.91 6.5803 22.625
166 2.0096 2.0459 4321.5 136.34 30.588 63.165 279.65 6.7148 23.433
168 2.1647 2.2289 4298.2 135.77 30.962 66.963 278.23 6.8598 24.322
170 2.3283 2.4294 4268.1 135.17 31.374 71.527 276.66 7.0175 25.314
172 2.5007 2.65 4230 134.55 31.829 77.111 274.93 7.1906 26.436
174 2.6822 2.8944 4182.9 133.9 32.337 84.089 273.02 7.3827 27.732
176 2.8732 3.1671 4125.2 133.21 32.912 93.049 270.92 7.5989 29.263
178 3.074 3.4744 4054.5 132.47 33.57 104.95 268.6 7.846 31.127
180 3.2852 3.8257 3967.9 131.66 34.338 121.51 266.04 8.1346 33.484
182 3.5071 4.2349 3860.4 130.76 35.257 146.04 263.17 8.4811 36.62
184 3.7405 4.7255 3724.4 129.73 36.397 185.97 259.89 8.9141 41.1
186 3.986 5.3422 3545 128.5 37.893 262.03 255.97 9.4902 48.246
188 4.2448 6.1945 3286.5 126.88 40.109 461.61 250.72 10.354 62.294
190 4.5186 7.8027 2783.9 124.01 45.796 2259 238.55 12.237 120.52
D3956 − 23
TABLE 3 Thermophysical Properties of Methane Along Isobars
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
Pressure = 0.1 MPa
92 28.037 84340 68.554 34.645 54.093 1527.3 186.44 209.71
92 28.037 –5659.5 68.563 34.645 54.093 1527.3 186.43 209.71
100 27.360 84775 73.087 33.911 54.672 1452.6 151.12 199.62
100 27.36 –5224.6 73.096 33.911 54.672 1452.6 151.12 199.62
110 26.478 85326 78.342 33.115 55.654 1354.8 120.92 186.04
110 26.478 –4673.2 78.35 33.115 55.654 1354.8 120.92 186.04
111.51 26.341 85410 79.101 33.003 55.828 1339.7 117.16 183.93
111.51 26.341 –4589.1 79.109 33.003 55.828 1339.7 117.16 183.93
111.51 0.11186 93610 152.64 25.904 35.558 271.33 4.318 11.393
111.51 0.11186 3610.7 152.64 25.904 35.558 271.33 4.3184 11.393
120 0.10316 93909 155.22 25.568 34.879 282.84 4.653 12.310
120 0.10316 3909.4 155.23 25.568 34.879 282.84 4.6534 12.31
130 0.094632 94255 157.99 25.364 34.427 295.56 5.044 13.444
130 0.094632 4255.8 158 25.364 34.427 295.56 5.0442 13.444
140 0.087479 94598 160.53 25.250 34.150 307.59 5.433 14.602
140 0.087479 4598.5 160.54 25.25 34.15 307.59 5.4326 14.602
150 0.081375 94938 162.88 25.186 33.972 319.04 5.819 15.771
150 0.081375 4939.1 162.89 25.186 33.972 319.04 5.8185 15.771
160 0.076095 95277 165.07 25.154 33.858 330.01 6.202 16.945
160 0.076095 5278.2 165.08 25.154 33.858 330.01 6.2015 16.945
170 0.071476 95616 167.12 25.146 33.788 340.55 6.581 18.121
170 0.071476 5616.4 167.13 25.146 33.788 340.55 6.5812 18.12
180 0.067399 95953 169.05 25.161 33.755 350.71 6.957 19.301
180 0.067399 5954.1 169.06 25.161 33.755 350.71 6.9573 19.301
190 0.063770 96291 170.88 25.198 33.754 360.51 7.329 20.501
190 0.06377 6291.6 170.88 25.198 33.754 360.51 7.3293 20.501
200 0.060518 96628 172.61 25.259 33.784 369.98 7.697 21.648
200 0.060518 6629.3 172.62 25.259 33.784 369.98 7.6973 21.648
210 0.057586 96967 174.26 25.345 33.845 379.14 8.061 22.817
210 0.057586 6967.4 174.27 25.345 33.845 379.14 8.0609 22.817
220 0.054929 97305 175.83 25.459 33.937 388.01 8.420 24.000
220 0.054929 7306.3 175.84 25.459 33.937 388.01 8.42 24
230 0.052508 97645 177.34 25.602 34.063 396.60 8.775 25.198
230 0.052508 7646.2 177.35 25.602 34.063 396.6 8.7748 25.197
240 0.050295 97987 178.80 25.776 34.221 404.91 9.125 26.412
240 0.050295 7987.6 178.81 25.776 34.221 404.91 9.1251 26.412
250 0.048261 98330 180.20 25.981 34.414 412.96 9.471 27.647
250 0.048261 8330.8 180.21 25.981 34.414 412.96 9.4709 27.647
260 0.046387 98675 181.55 26.218 34.640 420.77 9.812 28.904
260 0.046387 8676 181.56 26.218 34.64 420.77 9.8124 28.904
270 0.044655 99023 182.86 26.487 34.899 428.34 10.149 30.188
270 0.044655 9023.7 182.87 26.487 34.899 428.34 10.149 30.188
280 0.043047 99373 184.14 26.788 35.192 435.68 10.482 31.499
280 0.043047 9374.1 184.15 26.788 35.192 435.68 10.482 31.499
290 0.041552 99727 185.38 27.119 35.515 442.81 10.811 32.841
290 0.041552 9727.6 185.39 27.119 35.515 442.81 10.811 32.841
300 0.040158 100080 186.59 27.479 35.869 449.74 11.136 34.214
300 0.040158 10085 186.6 27.479 35.869 449.74 11.136 34.214
310 0.038855 100440 187.77 27.866 36.251 456.48 11.456 35.620
310 0.038855 10445 187.78 27.866 36.251 456.48 11.456 35.62
320 0.037635 100810 188.93 28.280 36.659 463.05 11.773 37.059
320 0.037635 10810 188.94 28.28 36.659 463.05 11.773 37.059
330 0.036489 101180 190.06 28.718 37.092 469.45 12.085 38.533
330 0.036489 11178 190.07 28.718 37.092 469.45 12.085 38.532
340 0.035411 101550 191.18 29.178 37.548 475.70 12.394 40.040
340 0.035411 11552 191.19 29.178 37.548 475.7 12.394 40.04
350 0.034395 101930 192.27 29.658 38.025 481.81 12.700 41.581
350 0.034395 11929 192.28 29.658 38.025 481.81 12.7 41.581
360 0.033436 102310 193.35 30.157 38.520 487.79 13.002 43.156
360 0.033436 12312 193.36 30.157 38.52 487.79 13.002 43.156
370 0.032529 102700 194.41 30.672 39.032 493.64 13.300 44.764
370 0.032529 12700 194.42 30.672 39.032 493.64 13.3 44.764
380 0.031670 103090 195.46 31.202 39.560 499.38 13.595 46.405
380 0.03167 13093 195.47 31.202 39.56 499.38 13.595 46.405
390 0.030855 103490 196.50 31.745 40.100 505.02 13.887 48.077
390 0.030855 13491 196.5 31.745 40.1 505.02 13.887 48.077
400 0.030082 103890 197.52 32.300 40.652 510.56 14.176 49.779
400 0.030082 13895 197.53 32.3 40.652 510.56 14.176 49.779
410 0.029346 104300 198.53 32.864 41.215 516.01 14.461 51.512
410 0.029346 14304 198.54 32.864 41.215 516.01 14.461 51.512
420 0.028646 104720 199.53 33.437 41.786 521.38 14.744 53.272
420 0.028646 14719 199.54 33.437 41.786 521.38 14.744 53.272
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
430 0.027978 105140 200.52 34.018 42.364 526.66 15.023 55.061
430 0.027978 15140 200.53 34.018 42.364 526.66 15.023 55.061
440 0.027341 105570 201.50 34.604 42.949 531.88 15.300 56.876
440 0.027341 15566 201.51 34.604 42.949 531.88 15.3 56.876
450 0.026732 106000 202.47 35.195 43.539 537.03 15.574 58.716
450 0.026732 15999 202.48 35.195 43.539 537.03 15.574 58.716
460 0.026150 106440 203.43 35.791 44.133 542.11 15.845 60.581
460 0.02615 16437 203.44 35.791 44.133 542.11 15.845 60.581
470 0.025593 106880 204.39 36.389 44.730 547.13 16.113 62.469
470 0.025593 16882 204.4 36.389 44.73 547.13 16.113 62.469
480 0.025059 107330 205.34 36.990 45.329 552.09 16.380 64.380
480 0.025059 17332 205.35 36.99 45.329 552.09 16.38 64.38
490 0.024546 107790 206.28 37.592 45.931 557.00 16.643 66.312
490 0.024546 17788 206.29 37.592 45.931 557 16.643 66.312
500 0.024055 108250 207.21 38.196 46.533 561.86 16.904 68.264
500 0.024055 18250 207.22 38.196 46.533 561.86 16.904 68.264
510 0.023583 108720 208.14 38.800 47.136 566.66 17.163 70.237
510 0.023583 18719 208.15 38.8 47.136 566.66 17.163 70.237
520 0.023129 109190 209.06 39.403 47.738 571.43 17.419 72.228
520 0.023129 19193 209.07 39.403 47.738 571.43 17.419 72.228
530 0.022692 109670 209.98 40.006 48.340 576.14 17.674 74.237
530 0.022692 19674 209.98 40.006 48.34 576.14 17.674 74.237
540 0.022271 110160 210.89 40.608 48.941 580.82 17.926 76.263
540 0.022271 20160 210.89 40.608 48.941 580.82 17.926 76.263
550 0.021866 110650 211.79 41.208 49.541 585.45 18.175 78.306
550 0.021866 20652 211.8 41.208 49.541 585.45 18.175 78.306
560 0.021475 111150 212.69 41.807 50.139 590.04 18.423 80.365
560 0.021475 21151 212.7 41.807 50.139 590.04 18.423 80.365
570 0.021098 111650 213.58 42.404 50.735 594.59 18.669 82.438
570 0.021098 21655 213.59 42.404 50.735 594.59 18.669 82.438
580 0.020734 112160 214.47 42.998 51.329 599.11 18.913 84.526
580 0.020734 22165 214.48 42.998 51.329 599.11 18.913 84.526
590 0.020382 112680 215.35 43.590 51.920 603.59 19.155 86.628
590 0.020382 22682 215.36 43.59 51.92 603.59 19.155 86.628
600 0.020042 113200 216.23 44.179 52.509 608.04 19.395 88.743
600 0.020042 23204 216.24 44.179 52.509 608.04 19.395 88.743
Pressure = 1 MPa
92 28.074 84363 68.459 34.682 54.010 1533.5 189.65 210.52
92 28.074 –5636.1 68.468 34.682 54.01 1533.5 189.65 210.52
100 27.403 84797 72.984 33.950 54.562 1459.6 153.31 200.50
100 27.403 –5202 72.993 33.95 54.562 1459.6 153.31 200.5
110 26.529 85347 78.226 33.156 55.497 1363.2 122.50 187.02
110 26.529 –4651.9 78.235 33.156 55.497 1363.2 122.5 187.02
120 25.606 85908 83.106 32.437 56.733 1262.4 99.85 172.95
120 25.606 –4091.1 83.114 32.437 56.733 1262.4 99.852 172.95
130 24.616 86484 87.71 31.786 58.434 1156.6 82.137 158.57
130 24.616 –3515.7 87.719 31.786 58.434 1156.6 82.137 158.57
140 23.532 87080 92.13 31.220 60.937 1043.7 67.819 143.99
140 23.532 –2919.7 92.134 31.22 60.937 1043.7 67.819 143.99
149.14 22.416 87652 96.08 30.810 64.535 931.21 56.879 130.40
149.14 22.416 –2347.7 96.091 30.81 64.535 931.21 56.879 130.4
149.14 0.97852 94320 140.79 28.353 46.147 286.08 5.784 18.131
149.14 0.97852 4320.6 140.8 28.353 46.147 286.08 5.7839 18.131
150 0.96844 94359 141.06 28.165 45.565 287.76 5.827 18.161
150 0.96844 4360 141.07 28.165 45.565 287.76 5.827 18.161
160 0.87050 94792 143.85 26.991 41.516 305.18 6.280 18.759
160 0.8705 4792.5 143.86 26.991 41.516 305.18 6.2798 18.759
170 0.79596 95196 146.30 26.470 39.472 320.20 6.692 19.629
170 0.79596 5196.6 146.31 26.47 39.472 320.2 6.6918 19.629
180 0.73599 95584 148.52 26.161 38.186 333.74 7.085 20.636
180 0.73599 5584.4 148.53 26.161 38.186 333.74 7.0849 20.636
190 0.68611 95961 150.56 25.976 37.322 346.20 7.466 21.786
190 0.68611 5961.7 150.57 25.976 37.322 346.2 7.466 21.786
200 0.64363 96331 152.46 25.879 36.730 357.81 7.838 22.739
200 0.64363 6331.7 152.46 25.879 36.73 357.81 7.8383 22.739
210 0.60682 96696 154.24 25.850 36.325 368.73 8.204 23.806
210 0.60682 6696.9 154.25 25.85 36.325 368.73 8.2036 23.806
220 0.57450 97058 155.92 25.878 36.060 379.06 8.563 24.914
220 0.5745 7058.7 155.93 25.878 36.06 379.06 8.5629 24.914
230 0.54581 97418 157.52 25.956 35.903 388.88 8.917 26.050
230 0.54581 7418.4 157.53 25.956 35.903 388.88 8.9166 26.05
240 0.52011 97776 159.05 26.078 35.834 398.24 9.265 27.214
240 0.52011 7777.1 159.06 26.078 35.834 398.24 9.2652 27.214
250 0.49693 98135 160.51 26.242 35.840 407.20 9.609 28.404
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
250 0.49693 8135.4 160.52 26.242 35.84 407.2 9.609 28.404
260 0.47587 98493 161.92 26.446 35.911 415.79 9.948 29.623
260 0.47587 8494.1 161.92 26.446 35.911 415.79 9.9481 29.623
270 0.45665 98853 163.27 26.688 36.040 424.04 10.283 30.872
270 0.45665 8853.8 163.28 26.688 36.04 424.04 10.283 30.872
280 0.43902 99214 164.59 26.966 36.221 431.98 10.613 32.153
280 0.43902 9215.1 164.6 26.966 36.221 431.98 10.613 32.153
290 0.42278 99578 165.86 27.277 36.450 439.64 10.939 33.467
290 0.42278 9578.4 165.87 27.277 36.45 439.64 10.939 33.467
300 0.40776 99943 167.10 27.621 36.721 447.04 11.261 34.815
300 0.40776 9944.2 167.11 27.621 36.721 447.04 11.261 34.815
310 0.39381 100310 168.31 27.995 37.031 454.19 11.579 36.197
310 0.39381 10313 168.32 27.995 37.031 454.19 11.579 36.197
320 0.38084 100680 169.49 28.397 37.376 461.13 11.893 37.615
320 0.38084 10685 169.5 28.397 37.376 461.13 11.893 37.615
330 0.36872 101060 170.65 28.824 37.753 467.87 12.203 39.069
330 0.36872 11061 170.66 28.824 37.753 467.87 12.203 39.069
340 0.35738 101440 171.78 29.275 38.160 474.42 12.510 40.558
340 0.35738 11440 171.79 29.275 38.16 474.42 12.51 40.558
350 0.34675 101820 172.89 29.747 38.592 480.80 12.813 42.083
350 0.34675 11824 172.9 29.747 38.592 480.8 12.813 42.083
360 0.33674 102210 173.99 30.239 39.048 487.02 13.113 43.642
360 0.33674 12212 174 30.239 39.048 487.02 13.113 43.642
370 0.32732 102600 175.06 30.748 39.524 493.09 13.409 45.235
370 0.32732 12605 175.07 30.748 39.524 493.09 13.409 45.235
380 0.31842 103000 176.12 31.272 40.019 499.04 13.702 46.862
380 0.31842 13003 176.13 31.272 40.019 499.04 13.702 46.862
390 0.31001 103400 177.17 31.810 40.531 504.86 13.991 48.520
390 0.31001 13405 177.18 31.81 40.531 504.86 13.991 48.52
400 0.30205 103810 178.20 32.360 41.056 510.57 14.278 50.211
400 0.30205 13813 178.21 32.36 41.056 510.57 14.278 50.211
410 0.29449 104230 179.22 32.920 41.595 516.18 14.562 51.931
410 0.29449 14226 179.23 32.92 41.595 516.18 14.562 51.931
420 0.28731 104640 180.23 33.489 42.143 521.69 14.842 53.681
420 0.28731 14645 180.24 33.489 42.143 521.69 14.842 53.681
430 0.28048 105070 181.23 34.066 42.702 527.11 15.120 55.459
430 0.28048 15069 181.24 34.066 42.702 527.11 15.12 55.459
440 0.27397 105500 182.22 34.650 43.268 532.44 15.395 57.264
440 0.27397 15499 182.23 34.65 43.268 532.44 15.395 57.264
450 0.26776 105930 183.20 35.238 43.840 537.70 15.667 59.095
450 0.26776 15935 183.21 35.238 43.84 537.7 15.667 59.095
460 0.26184 106380 184.17 35.831 44.418 542.89 15.937 60.951
460 0.26184 16376 184.18 35.831 44.418 542.89 15.937 60.951
470 0.25617 106820 185.13 36.427 45.001 548.01 16.204 62.831
470 0.25617 16823 185.14 36.427 45.001 548.01 16.204 62.831
480 0.25075 107280 186.08 37.025 45.587 553.06 16.468 64.733
480 0.25075 17276 186.09 37.025 45.587 553.06 16.468 64.733
490 0.24556 107730 187.03 37.626 46.176 558.05 16.730 66.658
490 0.24556 17735 187.04 37.626 46.176 558.05 16.73 66.658
500 0.24058 108200 187.97 38.227 46.766 562.99 16.990 68.603
500 0.24058 18200 187.98 38.227 46.766 562.99 16.99 68.603
510 0.23580 108670 188.90 38.829 47.358 567.87 17.247 70.568
510 0.2358 18670 188.91 38.829 47.358 567.87 17.247 70.568
520 0.23121 109150 189.82 39.431 47.950 572.70 17.502 72.552
520 0.23121 19147 189.83 39.431 47.95 572.7 17.502 72.552
530 0.22680 109630 190.74 40.032 48.543 577.48 17.755 74.555
530 0.2268 19629 190.75 40.032 48.543 577.48 17.755 74.555
540 0.22255 110120 191.66 40.633 49.135 582.21 18.006 76.575
540 0.22255 20118 191.66 40.633 49.135 582.21 18.006 76.575
550 0.21847 110610 192.56 41.232 49.726 586.90 18.255 78.612
550 0.21847 20612 192.57 41.232 49.726 586.9 18.255 78.612
560 0.21453 111110 193.46 41.830 50.316 591.55 18.501 80.665
560 0.21453 21112 193.47 41.83 50.316 591.55 18.501 80.665
570 0.21073 111620 194.36 42.425 50.905 596.15 18.746 82.733
570 0.21073 21618 194.37 42.425 50.905 596.15 18.746 82.733
580 0.20707 112130 195.25 43.019 51.492 600.71 18.989 84.815
580 0.20707 22130 195.26 43.019 51.492 600.71 18.989 84.815
590 0.20353 112650 196.14 43.610 52.077 605.24 19.229 86.912
590 0.20353 22648 196.14 43.61 52.077 605.24 19.229 86.912
600 0.20012 113170 197.02 44.198 52.659 609.73 19.468 89.022
600 0.20012 23172 197.02 44.198 52.659 609.73 19.468 89.022
Pressure = 2 MPa
92 28.115 84389 68.355 34.722 53.921 1540.4 193.22 211.40
92 28.115 –5610.1 68.364 34.722 53.921 1540.4 193.22 211.4
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
100 27.450 84822 72.871 33.992 54.445 1467.4 155.72 201.47
100 27.45 –5176.8 72.88 33.992 54.445 1467.4 155.72 201.47
110 26.585 85371 78.100 33.201 55.329 1372.3 124.23 188.10
110 26.585 –4628.1 78.109 33.201 55.329 1372.3 124.23 188.1
120 25.674 85930 82.962 32.483 56.489 1273.3 101.28 174.16
120 25.674 -4069.3 82.97 32.483 56.489 1273.3 101.28 174.16
130 24.701 86502 87.542 31.831 58.063 1169.7 83.443 159.94
130 24.701 –3497 87.551 31.831 58.063 1169.7 83.443 159.94
140 23.641 87093 91.922 31.258 60.331 1060.1 69.093 145.58
140 23.641 –2905.8 91.931 31.258 60.331 1060.1 69.093 145.58
150 22.453 87713 96.195 30.798 63.871 941.45 57.245 131.01
150 22.453 –2286.2 96.204 30.798 63.871 941.45 57.245 131.01
160 21.055 88380 100.50 30.526 70.193 807.65 47.125 115.92
160 21.055 –1619.4 100.51 30.526 70.193 807.65 47.125 115.92
165.87 20.061 88810 103.14 30.539 77.093 716.36 41.658 106.48
165.87 20.061 –1188.9 103.15 30.539 77.093 716.36 41.658 106.48
165.87 2.0348 94322 136.37 30.565 62.944 279.73 6.7060 23.379
165.87 2.0348 4322.7 136.38 30.565 62.944 279.73 6.706 23.379
170 1.9032 94565 137.81 29.192 55.613 290.52 6.9116 23.040
170 1.9032 4565.8 137.82 29.192 55.613 290.52 6.9116 23.04
180 1.6770 95075 140.73 27.775 47.612 311.34 7.3293 23.101
180 1.677 5075.7 140.74 27.775 47.612 311.34 7.3293 23.101
190 1.5180 95530 143.19 27.121 43.836 328.40 7.7102 23.852
190 1.518 5531.1 143.2 27.121 43.836 328.4 7.7102 23.852
200 1.3957 95957 145.38 26.741 41.587 343.30 8.0758 24.329
200 1.3957 5957.4 145.39 26.741 41.587 343.3 8.0758 24.329
210 1.2969 96365 147.37 26.521 40.122 356.70 8.4324 25.179
210 1.2969 6365.5 147.38 26.521 40.122 356.7 8.4324 25.179
220 1.2143 96761 149.21 26.415 39.129 368.98 8.7824 26.138
220 1.2143 6761.4 149.22 26.415 39.129 368.98 8.7824 26.138
230 1.1437 97148 150.94 26.394 38.447 380.37 9.1271 27.163
230 1.1437 7149.1 150.95 26.394 38.447 380.37 9.1271 27.163
240 1.0823 97530 152.56 26.443 37.986 391.03 9.4672 28.239
240 1.0823 7531.1 152.57 26.443 37.986 391.03 9.4672 28.239
250 1.0283 97909 154.11 26.552 37.689 401.07 9.8029 29.357
250 1.0283 7909.3 154.12 26.552 37.689 401.07 9.8029 29.357
260 0.98014 98285 155.58 26.712 37.521 410.57 10.135 30.515
260 0.98014 8285.3 155.59 26.712 37.521 410.57 10.135 30.515
270 0.93689 98659 157.00 26.919 37.457 419.61 10.462 31.712
270 0.93689 8660.1 157.01 26.919 37.457 419.61 10.462 31.712
280 0.89775 99034 158.36 27.168 37.480 428.22 10.786 32.948
280 0.89775 9034.7 158.37 27.168 37.48 428.22 10.786 32.948
290 0.86210 99409 159.68 27.457 37.576 436.47 11.106 34.221
290 0.8621 9409.9 159.68 27.457 37.576 436.47 11.106 34.221
300 0.82945 99786 160.95 27.781 37.736 444.38 11.423 35.534
300 0.82945 9786.5 160.96 27.781 37.736 444.38 11.423 35.534
310 0.79940 100160 162.19 28.138 37.951 452.00 11.736 36.884
310 0.7994 10165 162.2 28.138 37.951 452 11.736 36.884
320 0.77164 100540 163.40 28.526 38.215 459.34 12.045 38.273
320 0.77164 10546 163.41 28.526 38.215 459.34 12.045 38.273
330 0.74590 100930 164.58 28.941 38.521 466.43 12.351 39.701
330 0.7459 10929 164.59 28.941 38.521 466.43 12.351 39.701
340 0.72194 101320 165.74 29.382 38.865 473.30 12.653 41.166
340 0.72194 11316 165.75 29.382 38.865 473.3 12.653 41.166
350 0.69958 101710 166.87 29.845 39.243 479.96 12.952 42.668
350 0.69958 11707 166.88 29.845 39.243 479.96 12.952 42.668
360 0.67864 102100 167.98 30.328 39.650 486.45 13.248 44.207
360 0.67864 12101 167.99 30.328 39.65 486.45 13.248 44.207
370 0.65900 102500 169.07 30.830 40.084 492.76 13.541 45.781
370 0.659 12500 169.08 30.83 40.084 492.76 13.541 45.781
380 0.64052 102900 170.15 31.348 40.540 498.91 13.831 47.390
380 0.64052 12903 170.16 31.348 40.54 498.91 13.831 47.39
390 0.62311 103310 171.21 31.881 41.017 504.93 14.117 49.033
390 0.62311 13311 171.22 31.881 41.017 504.93 14.117 49.033
400 0.60667 103720 172.25 32.425 41.511 510.82 14.401 50.708
400 0.60667 13723 172.26 32.425 41.511 510.82 14.401 50.708
410 0.59111 104140 173.28 32.981 42.021 516.59 14.681 52.414
410 0.59111 14141 173.29 32.981 42.021 516.59 14.681 52.414
420 0.57636 104560 174.30 33.546 42.544 522.24 14.959 54.150
420 0.57636 14564 174.31 33.546 42.544 522.24 14.959 54.15
430 0.56236 104990 175.31 34.119 43.079 527.80 15.234 55.916
430 0.56236 14992 175.32 34.119 43.079 527.8 15.234 55.916
440 0.54905 105420 176.31 34.699 43.624 533.26 15.507 57.709
440 0.54905 15425 176.31 34.699 43.624 533.26 15.507 57.709
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
450 0.53638 105860 177.29 35.285 44.176 538.64 15.777 59.528
450 0.53638 15864 177.3 35.285 44.176 538.64 15.777 59.528
460 0.52431 106310 178.27 35.874 44.736 543.93 16.044 61.373
460 0.52431 16309 178.28 35.874 44.736 543.93 16.044 61.373
470 0.51278 106760 179.24 36.468 45.302 549.15 16.309 63.243
470 0.51278 16759 179.25 36.468 45.302 549.15 16.309 63.243
480 0.50176 107210 180.20 37.064 45.873 554.30 16.571 65.136
480 0.50176 17215 180.21 37.064 45.873 554.3 16.571 65.136
490 0.49123 107680 181.15 37.662 46.447 559.38 16.832 67.051
490 0.49123 17677 181.16 37.662 46.447 559.38 16.832 67.051
500 0.48113 108140 182.09 38.261 47.024 564.39 17.089 68.987
500 0.48113 18144 182.1 38.261 47.024 564.39 17.089 68.987
510 0.47146 108620 183.03 38.862 47.604 569.35 17.345 70.944
510 0.47146 18617 183.04 38.862 47.604 569.35 17.345 70.944
520 0.46218 109100 183.96 39.462 48.185 574.25 17.598 72.920
520 0.46218 19096 183.97 39.462 48.185 574.25 17.598 72.92
530 0.45326 109580 184.88 40.061 48.766 579.09 17.849 74.915
530 0.45326 19581 184.89 40.061 48.766 579.09 17.849 74.915
540 0.44470 110070 185.80 40.660 49.349 583.89 18.098 76.928
540 0.4447 20071 185.81 40.66 49.349 583.89 18.098 76.928
550 0.43645 110570 186.71 41.258 49.931 588.63 18.346 78.958
550 0.43645 20568 186.72 41.258 49.931 588.63 18.346 78.958
560 0.42852 111070 187.62 41.854 50.512 593.33 18.591 81.004
560 0.42852 21070 187.63 41.854 50.512 593.33 18.591 81.004
570 0.42087 111580 188.52 42.449 51.093 597.98 18.834 83.065
570 0.42087 21578 188.52 42.449 51.093 597.98 18.834 83.065
580 0.41350 112090 189.41 43.041 51.672 602.59 19.075 85.142
580 0.4135 22092 189.42 43.041 51.672 602.59 19.075 85.142
590 0.40638 112610 190.30 43.631 52.249 607.16 19.315 87.232
590 0.40638 22611 190.31 43.631 52.249 607.16 19.315 87.232
600 0.39951 113140 191.18 44.218 52.825 611.69 19.552 89.336
600 0.39951 23137 191.19 44.218 52.825 611.69 19.552 89.336
Pressure = 3 MPa
92 28.156 84415 68.252 34.762 53.835 1547.1 196.78 212.29
92 28.156 –5584.1 68.261 34.762 53.835 1547.1 196.78 212.29
100 27.496 84848 72.760 34.034 54.331 1475.0 158.13 202.43
100 27.496 –5151.6 72.769 34.034 54.331 1475 158.13 202.43
110 26.640 85395 77.976 33.245 55.169 1381.2 125.95 189.17
110 26.64 –4604.2 77.984 33.245 55.169 1381.2 125.95 189.17
120 25.740 85952 82.821 32.528 56.258 1283.8 102.70 175.35
120 25.74 –4047.3 82.829 32.528 56.258 1283.8 102.7 175.35
130 24.783 86521 87.378 31.876 57.717 1182.4 84.725 161.29
130 24.783 –3477.9 87.387 31.876 57.717 1182.4 84.725 161.29
140 23.746 87108 91.726 31.298 59.781 1075.8 70.336 147.13
140 23.746 –2891 91.735 31.298 59.781 1075.8 70.336 147.13
150 22.595 87720 95.949 30.823 62.908 961.61 58.513 132.85
150 22.595 –2278.7 95.958 30.823 62.908 961.61 58.513 132.85
160 21.264 88373 100.16 30.505 68.179 835.51 48.504 118.24
160 21.264 –1625.9 100.17 30.505 68.179 835.51 48.503 118.24
170 19.600 89102 104.58 30.508 79.233 687.08 39.559 102.68
170 19.6 –897.09 104.58 30.508 79.233 687.08 39.558 102.68
177.27 17.885 89746 108.28 31.148 102.880 544.18 32.957 89.612
177.27 17.885 –252.81 108.29 31.148 102.88 544.18 32.957 89.612
177.27 3.3584 94081 132.74 33.320 100.210 269.47 7.752 30.404
177.27 3.3584 4081.8 132.74 33.32 100.21 269.47 7.7522 30.404
180 3.1212 94324 134.09 31.392 80.386 280.27 7.841 28.964
180 3.1212 4324.3 134.1 31.392 80.386 280.27 7.8406 28.964
190 2.6146 94984 137.67 28.798 57.334 307.50 8.142 27.597
190 2.6146 4985.2 137.68 28.798 57.334 307.5 8.1418 27.597
200 2.3157 95515 140.39 27.846 49.701 327.51 8.452 26.708
200 2.3157 5515.5 140.4 27.846 49.701 327.51 8.4522 26.708
210 2.1029 95990 142.71 27.328 45.725 344.24 8.769 27.049
210 2.1029 5990.8 142.72 27.328 45.725 344.24 8.769 27.049
220 1.9386 96434 144.78 27.032 43.298 358.90 9.089 27.711
220 1.9386 6435 144.79 27.032 43.298 358.9 9.0885 27.711
230 1.8054 96859 146.67 26.883 41.704 372.09 9.409 28.537
230 1.8054 6859.5 146.68 26.883 41.704 372.09 9.4087 28.537
240 1.6940 97270 148.42 26.840 40.619 384.17 9.729 29.466
240 1.694 7270.8 148.43 26.84 40.619 384.17 9.7285 29.466
250 1.5987 97672 150.06 26.881 39.875 395.36 10.047 30.472
250 1.5987 7673 150.07 26.881 39.875 395.36 10.047 30.472
260 1.5157 98068 151.61 26.990 39.373 405.81 10.364 31.540
260 1.5157 8069.1 151.62 26.99 39.373 405.81 10.364 31.54
270 1.4425 98460 153.09 27.157 39.051 415.63 10.679 32.663
D3956 − 23
TABLE 3 Continued
T ρ H S C C c η λ
v p
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
K mol·L J·mol J·mol ·K J·mol ·K J·mol ·K m·s μPa·s mW·m ·K
270 1.4425 8461.1 153.1 27.157 39.051 415.63 10.679 32.663
280 1.3772 98850 154.51 27.375 38.870 424.92 10.992 33.836
280 1.3772 8850.6 154.52 27.375 38.87 424.92 10.992 33.836
290 1.3185 99238 155.87 27.638 38.802 433.75 11.302 35.057
290 1.3185 9238.9 155.88 27.638 38.802 433.75 11.302 35.057
300 1.2653 99626 157.19 27.942 38.827 442.16 11.610 36.322
300 1.2653 9627 157.2 27.942 38.827 442.16 11.61 36.322
310 1.2168 100010 158.46 28.282 38.930 450.21 11.915 37.632
310 1.2168 10016 158.47 28.282 38.93 450.21 11.915 37.632
320 1.1723 100410 159.70 28.655 39.098 457.93 12.217 38.985
320 1.1723 10406 159.71 28.655 39.098 457.93 12.217 38.985
330 1.1314 100800 160.91 29.058 39.324 465.36 12.516 40.380
330 1.1314 10798 160.92 29.058 39.324 465.36 12.516 40.38
340 1.0934 101190 162.08 29.487 39.598 472.53 12.813 41.816
340 1.0934 11192 162.09 29.487 39.598 472.53 12.813 41.816
350 1.0582 101590 163.24 29.941 39.91
...