ASTM D1267-23
(Test Method)Standard Test Method for Gauge Vapor Pressure of Liquefied Petroleum (LP) Gases (LP-Gas Method)
Standard Test Method for Gauge Vapor Pressure of Liquefied Petroleum (LP) Gases (LP-Gas Method)
SIGNIFICANCE AND USE
5.1 Information on the vapor pressures of liquefied petroleum gas products under temperature conditions from 37.8 °C to 70 °C (100 °F to 158 °F) is pertinent to selection of properly designed storage vessels, shipping containers, and customer utilization equipment to ensure safe handling of these products.
5.2 Determination of the vapor pressure of liquefied petroleum gas is important for safety reasons to ensure that the maximum operating design pressures of storage, handling, and fuel systems will not be exceeded under normal operating temperature conditions.
5.3 For liquefied petroleum gases, vapor pressure can be considered a semi-quantitative measure of the amount of the most volatile material present in the product, and this can give an indication of low temperature operability.
SCOPE
1.1 This test method covers the determination of the gauge vapor pressures of liquefied petroleum gas products at temperatures of 37.8 °C (100 °F) up to and including a test temperature of 70 °C (158 °F). (Warning—Extremely flammable gas. May be harmful when inhaled.)
Note 1: An alternative method for measurement of vapor pressure of liquefied petroleum gases is Test Method D6897.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 1.1 and Annex A2.
1.4 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.
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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: D1267 − 23
Standard Test Method for
Gauge Vapor Pressure of Liquefied Petroleum (LP) Gases
1
(LP-Gas Method)
This standard is issued under the fixed designation D1267; 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* D6897 Test Method for Vapor Pressure of Liquefied Petro-
leum Gases (LPG) (Expansion Method)
1.1 This test method covers the determination of the gauge
vapor pressures of liquefied petroleum gas products at tem-
3. Terminology
peratures of 37.8 °C (100 °F) up to and including a test
temperature of 70 °C (158 °F). (Warning—Extremely flam- 3.1 Definitions:
mable gas. May be harmful when inhaled.) 3.1.1 For definitions of terms used in this test method, refer
to Terminology D4175.
NOTE 1—An alternative method for measurement of vapor pressure of
3.1.2 liquefied petroleum gas (LP gas, LPG), n—a narrow
liquefied petroleum gases is Test Method D6897.
boiling range mixture of hydrocarbons consisting of propane,
1.2 The values stated in SI units are to be regarded as
propylene, butanes, and butylenes, individually or in specified
standard. The values given in parentheses after SI units are
combinations, with limited amounts of other hydrocarbons
provided for information only and are not considered standard.
(such as ethane) and may contain naturally occurring,
1.3 This standard does not purport to address all of the
petroleum-derived non-hydrocarbons.
safety concerns, if any, associated with its use. It is the
3.1.3 vapor pressure, n—the pressure exerted by the vapor
responsibility of the user of this standard to establish appro-
of a liquid when in equilibrium with the liquid.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Summary of Test Method
For specific warning statements, see 1.1 and Annex A2.
4.1 The test apparatus, consisting of two interconnected
1.4 This international standard was developed in accor-
chambers and equipped with a suitable pressure gauge, is
dance with internationally recognized principles on standard-
purged with a portion of the sample which is then discarded.
ization established in the Decision on Principles for the
The apparatus is then filled completely with the portion of the
Development of International Standards, Guides and Recom-
sample to be tested. Thirty-three and one-third to forty volume
mendations issued by the World Trade Organization Technical
percent of the sample content of the apparatus is immediately
Barriers to Trade (TBT) Committee.
withdrawn to provide adequate free space for product expan-
2. Referenced Documents sion. The apparatus is then immersed in a water bath main-
2 tained at the standard test temperature of 37.8 °C (100 °F) or,
2.1 ASTM Standards:
optionally, at some higher test temperature up to and including
D323 Test Method for Vapor Pressure of Petroleum Products
a test temperature of 70 °C (158 °F).
(Reid Method)
D1265 Practice for Sampling Liquefied Petroleum (LP) 4.2 The observed gauge pressure at equilibrium, after cor-
Gases, Manual Method recting for gauge error and correcting to a standard barometric
D4175 Terminology Relating to Petroleum Products, Liquid pressure, is reported as the LPG Vapor Pressure at the selected
Fuels, and Lubricants test temperature.
5. Significance and Use
1
This test method is under the jurisdiction of ASTM Committee D02 on
5.1 Information on the vapor pressures of liquefied petro-
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.H0 on Liquefied Petroleum Gas.
leum gas products under temperature conditions from 37.8 °C
Current edition approved March 1, 2023. Published March 2023. Originally
to 70 °C (100 °F to 158 °F) is pertinent to selection of properly
approved in 1953. Last previous edition approved in 2018 as D1267 – 18. DOI:
designed storage vessels, shipping containers, and customer
10.1520/D1267-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or utilization equipment to ensure safe handling of these products.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 Determination of the vapor pressure of liquefied petro-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. leum gas is important for safety reasons to ensure that the
*A Summary of Changes section appears at the end of this standard
Copyright ©
...
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: D1267 − 18 D1267 − 23
Standard Test Method for
Gauge Vapor Pressure of Liquefied Petroleum (LP) Gases
1
(LP-Gas Method)
This standard is issued under the fixed designation D1267; 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 This test method covers the determination of the gauge vapor pressures of liquefied petroleum gas products at temperatures
of 37.8 °C (100 °F) up to and including a test temperature of 70 °C (158 °F). (Warning—Extremely flammable gas. May be
harmful when inhaled.)
NOTE 1—An alternative method for measurement of vapor pressure of liquefied petroleum gases is Test Method D6897.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for
information only and are not considered standard.
1.3 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. For specific warning statements, see 1.1 and Annex A2.
1.4 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
2.1 ASTM Standards:
D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)
D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
D6897 Test Method for Vapor Pressure of Liquefied Petroleum Gases (LPG) (Expansion Method)
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
3.1.2 liquefied petroleum gas (LP gas, LPG), n—aa narrow boiling range mixture of hydrocarbons consisting of propane,
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.H0 on Liquefied Petroleum Gas.
Current edition approved July 1, 2018March 1, 2023. Published August 2018March 2023. Originally approved in 1953. Last previous edition approved in 20122018 as
D1267 – 12.D1267 – 18. DOI: 10.1520/D1267-18.10.1520/D1267-23.
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, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1267 − 23
propylene, butanes, and butylenes, individually or in specified combinations, with limited amounts of other hydrocarbons (such
as ethane) and may contain naturally occurring, petroleum-derived non-hydrocarbons.
3.1.3 vapor pressure, n—the pressure exerted by the vapor of a liquid when in equilibrium with the liquid.
4. Summary of Test Method
4.1 The test apparatus, consisting of two interconnected chambers and equipped with a suitable pressure gauge, is purged with a
portion of the sample which is then discarded. The apparatus is then filled completely with the portion of the sample to be tested.
Thirty-three and one-third to forty volume percent of the sample content of the apparatus is immediately withdrawn to provide
adequate free space for product expansion. The apparatus is then immersed in a water bath maintained at the standard test
temperature of 37.8 °C (100 °F) or, optionally, at some higher test temperature up to and including a test temperature of 70 °C
(158 °F).
4.2 The observed gauge pressure at equilibrium, after correcting for gauge error and correcting to a standard barometric pressure,
is reported as the LPG Vapor Pressure at the selected test temperature.
5. Significance and Use
5.1 Information on the vapor pressures of liquefied petroleum gas products under temper
...
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