ASTM E1232-07

This document is not anASTM standard and is intended only to provide the user of anASTM 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:E1232–02 Designation:E1232–07
Standard Test Method for
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Temperature Limit of Flammability of Chemicals
This standard is issued under the fixed designation E 1232; 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.
INTRODUCTION
The temperature limit of flammability test measures the minimum temperature at which liquid (or
solid) chemicals evolve sufficient vapors to form a flammable mixture with air under equilibrium
conditions. This temperature is applicable for assessing flammability in large process vessels and
similar equipment (Appendixes Appendix X1 and Appendix X2).
1. Scope
1.1 This test method covers the determination of the minimum temperature at which vapors in equilibrium with a liquid (or
solid) chemical will be sufficiently concentrated to form flammable mixtures in air at atmospheric pressure. This test method is
written specifically for determination of the temperature limit of flammability of systems using air as the source of oxidant and
diluent.Itmayalsobeusedforotheroxidant/diluentcombinations,includingairplusdiluentmixtures;however,nooxidant/diluent
combination stronger than air should be used.Also, no unstable chemical capable of explosive decomposition reactions should be
tested (see 8.3).
1.2 This test method is designed and written to be run at local ambient pressure and is limited to a maximum initial pressure
of 1 atm abs. It may also be used for reduced pressures with the practical lower pressure limit being approximately 13.3 kPa (100
mm Hg). The maximum practical operating temperature of this equipment is approximately 150 °C (302 °F) (Note A1.2).
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are provided for
information only.
1.4 Thisstandardshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheat
and flame under controlled laboratory conditions, and should not be used to describe or appraise the fire hazard or fire risk of
materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk
assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end
use.
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. Specific safety precautions are given in Section 8.
2. Referenced Documents
2.1 ASTM Standards:
D56Test Method for Flash Point by Tag Closed Tester
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D92Test Method for Flash and Fire Points by Cleveland Open Cup
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D93Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
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D1310Test Method for Flash Point and Fire Point of Liquids by Tag Open-Cup Apparatus ASTM Standards:
D 3278 Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus
D 3828Test Method for Flash Point by Small Scale Closed Tester
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D3934Test Method for Flash/No FlashTest-Equilibrium Method by a Closed-CupApparatus Test Methods for Flash Point by
Small Scale Closed Cup Tester
D 3941 Test Method for Flash Point by the Equilibrium Method With a Closed-Cup Apparatus
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This test method is under the jurisdiction of ASTM Committee E27 on Hazard Potential of Chemicals and is the direct responsibility of Subcommittee E27.04 on
Flammability and Ignitability of Chemicals.
Current edition approved Sept. 10, 2002. Published December 2002. Originally published as E1232–91. Last previous edition E1232–91(1996).
Current edition approved Oct. 1, 2007. Published November 2007 . Originally approved in 1991. Last previous edition approved in 2002 as E 1232–02.
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For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 05.01.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.
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E1232–07
E 220Method for Calibration ofThermocouples by ComparisonTechniqu
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