ASTM-D2268 2021

$34.13

D2268-21 Standard Test Method for Analysis of High-Purity n-Heptane and Isooctane by Capillary Gas Chromatography

Published By	Publication Date	Number of Pages
ASTM	2021

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Categories: 71.080.10 - Aliphatic hydrocarbons, ASTM

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Description

ASTM D2268-21

Active Standard: Standard Test Method for Analysis of High-Purity n-Heptane and Isooctane by Capillary Gas Chromatography

ASTM D2268

Scope

1.1 This test method covers and 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.

1.2.1 Exception—The values given in parentheses are for information only.

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.

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.

Keywords

ASTM knock test reference fuels; capillary column; gas chromatography; isooctane; n-heptane;

ICS Code

ICS Number Code 71.080.10 (Aliphatic hydrocarbons)

DOI: 10.1520/D2268-21

Additional information

Standard Title	D2268-21 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
Published Code	ASTM
Publication Date	2021
ICS Codes	71.080.10 - Aliphatic hydrocarbons