ASTM D6378-10(2016)
(Test Method)Standard Test Method for Determination of Vapor Pressure (VPX) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)
Standard Test Method for Determination of Vapor Pressure (VP<inf>X</inf>) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)
SIGNIFICANCE AND USE
5.1 Vapor pressure is a very important physical property of volatile liquids for shipping and storage.
5.2 The vapor pressure of gasoline and gasoline-oxygenate blends is regulated by various government agencies.
5.3 Specifications for volatile petroleum products generally include vapor pressure limits to ensure products of suitable volatility performance.
5.4 In this test method, an air saturation procedure prior to the measurement is not required, thus eliminating losses of high volatile compounds during this step. This test method is faster and minimizes potential errors from improper air saturation. This test method permits VPX determinations in the field.
5.5 This test method can be applied in online applications in which an air saturation procedure prior to the measurement cannot be performed.
SCOPE
1.1 This test method covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum by volatile, liquid petroleum products, hydrocarbons, and hydrocarbon-oxygenate mixtures. This test method is suitable for testing samples with boiling points above 0 °C (32 °F) that exert a vapor pressure between 7 kPa and 150 kPa (1.0 psi and 21 psi) at 37.8 °C (100 °F) at a vapor-to-liquid ratio of 4:1. The liquid sample volume size required for analysis is dependent upon the vapor-to-liquid ratio chosen (see Note 1) and the measuring chamber volume capacity of the instrument (see 6.1.1 and Note 3).
Note 1: The test method is suitable for the determination of the vapor pressure of volatile, liquid petroleum products at temperatures from 0 °C to 100 °C at vapor to liquid ratios of 4:1 to 1:1 (X = 4 to 1) and pressures up to 500 kPa (70 psi), but the precision statement (see Section 16) may not be applicable.
1.2 This test method also covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum by aviation turbine fuels. This test method is suitable for testing aviation turbine fuel samples with boiling points above 0 °C (32 °F) that exert a vapor pressure between 0 kPa and 110 kPa (0 psi and 15.5 psi) at a vapor-to-liquid ratio of 4:1, in the temperature range from 25 °C to 100 °C (77 °F to 212 °F).
1.3 The vapor pressure (VPX) determined by this test method at a vapor-liquid ratio of 4:1 (X = 4) of gasoline and gasoline-oxygenate blends at 37.8 °C can be correlated to the dry vapor pressure equivalent (DVPE) value determined by Test Method D5191 (see 16.3). This condition does not apply when the sample is aviation turbine fuel.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.2 – 7.8.
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Designation: D6378 − 10 (Reapproved 2016)
Standard Test Method for
Determination of Vapor Pressure (VP ) of Petroleum
X
Products, Hydrocarbons, and Hydrocarbon-Oxygenate
1
Mixtures (Triple Expansion Method)
This standard is issued under the fixed designation D6378; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the use of automated vapor
responsibility of the user of this standard to establish appro-
pressureinstrumentstodeterminethevaporpressureexertedin
priate safety and health practices and determine the applica-
vacuum by volatile, liquid petroleum products, hydrocarbons,
bility of regulatory limitations prior to use. For specific
and hydrocarbon-oxygenate mixtures. This test method is
warning statements, see 7.2 – 7.8.
suitable for testing samples with boiling points above 0°C
(32°F) that exert a vapor pressure between 7kPa and 150kPa
2. Referenced Documents
(1.0psi and 21psi) at 37.8°C (100°F) at a vapor-to-liquid
2
2.1 ASTM Standards:
ratio of 4:1. The liquid sample volume size required for
D323TestMethodforVaporPressureofPetroleumProducts
analysis is dependent upon the vapor-to-liquid ratio chosen
(Reid Method)
(see Note 1) and the measuring chamber volume capacity of
D2892Test Method for Distillation of Crude Petroleum
the instrument (see 6.1.1 and Note 3).
(15-Theoretical Plate Column)
NOTE 1—The test method is suitable for the determination of the vapor
D4057Practice for Manual Sampling of Petroleum and
pressure of volatile, liquid petroleum products at temperatures from 0°C
Petroleum Products
to 100°C at vapor to liquid ratios of 4:1 to 1:1 (X=4to1)and pressures
D4177Practice for Automatic Sampling of Petroleum and
up to 500kPa (70psi), but the precision statement (see Section 16) may
Petroleum Products
not be applicable.
D4953Test Method for Vapor Pressure of Gasoline and
1.2 Thistestmethodalsocoverstheuseofautomatedvapor
Gasoline-Oxygenate Blends (Dry Method)
pressureinstrumentstodeterminethevaporpressureexertedin
D5191Test Method for Vapor Pressure of Petroleum Prod-
vacuum by aviation turbine fuels. This test method is suitable
ucts (Mini Method)
for testing aviation turbine fuel samples with boiling points
D5842Practice for Sampling and Handling of Fuels for
above 0°C (32°F) that exert a vapor pressure between 0kPa
Volatility Measurement
and 110kPa (0psi and 15.5psi) at a vapor-to-liquid ratio of
D5854Practice for Mixing and Handling of Liquid Samples
4:1, in the temperature range from 25°C to 100°C (77°F to
of Petroleum and Petroleum Products
212°F).
D6299Practice for Applying Statistical Quality Assurance
1.3 The vapor pressure (VP ) determined by this test
X
and Control Charting Techniques to Evaluate Analytical
method at a vapor-liquid ratio of 4:1 (X = 4) of gasoline and
Measurement System Performance
gasoline-oxygenate blends at 37.8°C can be correlated to the
D6300Practice for Determination of Precision and Bias
dry vapor pressure equivalent (DVPE) value determined by
Data for Use in Test Methods for Petroleum Products and
Test Method D5191 (see 16.3). This condition does not apply
Lubricants
when the sample is aviation turbine fuel.
D6708Practice for StatisticalAssessment and Improvement
of Expected Agreement Between Two Test Methods that
1.4 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information Purport to Measure the Same Property of a Material
only.
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
2
Subcommittee D02.08 on Volatility. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2016. Published November 2016. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1999. Last previous edition approved in 2010 as D6378–10 DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6378-10R16. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6378 − 10 (2016)
3.1.1 dry vapor pressure equivalent (DVPE)—a value cal- associated equipment to control the chamber temperature
culated by a correlation equation from the total press
...
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: D6378 − 10 D6378 − 10 (Reapproved 2016)
Standard Test Method for
Determination of Vapor Pressure (VP ) of Petroleum
X
Products, Hydrocarbons, and Hydrocarbon-Oxygenate
1
Mixtures (Triple Expansion Method)
This standard is issued under the fixed designation D6378; 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*Scope
1.1 This test method covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum
by volatile, liquid petroleum products, hydrocarbons, and hydrocarbon-oxygenate mixtures. This test method is suitable for testing
samples with boiling points above 0°C (32°F)0 °C (32 °F) that exert a vapor pressure between 7 and 150 kPa (1.0 and 21 psi) at
37.8°C (100°F)7 kPa and 150 kPa (1.0 psi and 21 psi) at 37.8 °C (100 °F) at a vapor-to-liquid ratio of 4:1. The liquid sample
volume size required for analysis is dependent upon the vapor-to-liquid ratio chosen (see Note 1) and the measuring chamber
volume capacity of the instrument (see 6.1.1 and Note 3).
NOTE 1—The test method is suitable for the determination of the vapor pressure of volatile, liquid petroleum products at temperatures from 00 °C to
100°C100 °C at vapor to liquid ratios of 4:1 to 1:1 (X = 4 to 1) and pressures up to 500 kPa (70 psi), 500 kPa (70 psi), but the precision statement (see
Section 16) may not be applicable.
1.2 This test method also covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in
vacuum by aviation turbine fuels. This test method is suitable for testing aviation turbine fuel samples with boiling points above
0°C (32°F)0 °C (32 °F) that exert a vapor pressure between 0 and 110 kPa (0 and 15.5 psi) 0 kPa and 110 kPa (0 psi and 15.5 psi)
at a vapor-to-liquid ratio of 4:1, in the temperature range from 2525 °C to 100°C (77100 °C (77 °F to 212°F).212 °F).
1.3 The vapor pressure (VP ) determined by this test method at a vapor-liquid ratio of 4:1 (X = 4) of gasoline and
X
gasoline-oxygenate blends at 37.8°C37.8 °C can be correlated to the dry vapor pressure equivalent (DVPE) value determined by
Test Method D5191 (see 16.3). This condition does not apply when the sample is aviation turbine fuel.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. For specific warning statements, see 7.2 – 7.8.
2. Referenced Documents
2
2.1 ASTM Standards:
D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)
D2892 Test Method for Distillation of Crude Petroleum (15-Theoretical Plate Column)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4953 Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)
D5191 Test Method for Vapor Pressure of Petroleum Products (Mini Method)
D5842 Practice for Sampling and Handling of Fuels for Volatility Measurement
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.08 on Volatility.
Current edition approved Oct. 1, 2010Oct. 1, 2016. Published November 2010November 2016. Originally approved in 1999. Last previous edition approved in 20082010
as D6378D6378 – 10–08. DOI: 10.1520/D6378-10.10.1520/D6378-10R16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
...
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