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ASTM D2268-93(1998)

Historical Reaffirmation

Standard Test Method for Analysis of High-Purity <emph type="ital">n</emph>-Heptane and <emph type="ital">Iso</emph>octane by Capillary Gas Chromatography

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1.1 This test method provides for the analysis of high-purity (greater than 99.5% by volume) n-heptane and isooctane (2,2,4-trimethylpentane), which are used as primary reference standards in determining the octane number of a fuel. Individual compounds present in concentrations of less than 0.01% can be detected. Columns specified by this test method may not allow separation of all impurities in reference fuels.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety problems, 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 precautionary statements see notes 1-3.


SDO ASTM: ASTM International
Document Number D2268
Publication Date July 10, 1998
Language en - English
Page Count 5
Revision Level 93(1998)
Supercedes
Committee D02.04.0L
Publish Date Document Id Type View
Dec. 1, 2021 D2268-21 Revision
Oct. 1, 2017 D2268-93R17 Reaffirmation
Oct. 1, 2013 D2268-93R13 Reaffirmation
May 1, 2008 D2268-93R08 Reaffirmation
May 10, 2003 D2268-93R03E01 Reaffirmation
July 10, 1998 D2268-93R98 Reaffirmation