Astm vapor reid

NOTICE: This standard has either been superseded and replaced by a new version or discontinued. Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1267 – 95 (Reapproved 2001)e1
An American National Standard

Standard Test Method for

Gage Vapor Pressure of Liquefied Petroleum (LP) Gases (LP-Gas Method)1
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 (e) indicates an editorial change since the last revision or reapproval.

e1 NOTE—Warning notes were placed in the text editorially in May 2001.

1. Scope 1.1This test method covers the determination of the gage 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). 1.2 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 healthpractices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see3.2.1 and Annex A2. 1.3 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses are for information only. 2. Referenced Documents 2.1 ASTM Standards: D 323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)2 D 1265Practice for Sampling Liquefied Petroleum (LP) Gases (Manual Method)2 E 1 Specification for ASTM Thermometers3 2.2 Institute of Petroleum Standard: IP 181 Sampling Petroleum Gases4 3. Terminology 3.1 Definitions: 3.1.1 vapor pressure—the pressure exerted by the vapor of a liquid when in equilibrium with the liquid. 3.2 Definitions of Terms Specific to This Standard: 3.2.1 liquefied petroleum gases—narrowboiling range hydrocarbon mixtures consisting chiefly of propane or propylene, or both, (Warning— Extremely flammable. Harmful when inhaled.) butanes and butylenes, or both, in which the content
1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.H on Liquefied Petroleum Gas. Current editionapproved April 15, 1995. Published June 1995. Originally published as D 1267 – 53 T. Last previous edition D 1267 – 89. 2 Annual Book of ASTM Standards, Vol 05.01. 3 Annual Book of ASTM Standards, Vol 14.03. 4 Available from Applied Science Publishers, Ripple Rd., Barking, Essex, England

of hydrocarbon compounds of higher boiling point than 0°C (32°F) is less than 5 % by liquid volume, and whose gagevapor pressure at 37.8°C (100°F) is not greater than approximately 1550 kPa (225 psi). 4. Summary of Test Method 4.1 The test apparatus, consisting of two interconnected chambers and equipped with a suitable pressure gage, 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 toforty 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 gage pressure at equilibrium,after correcting for gage 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 temperature conditions from 37.8 to 70°C (100 to 158°F) is pertinent to selection of properly designed storage vessels, shipping containers,...