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ASTM D4046-14(2019)

Current Revision

Standard Test Method for Alkyl Nitrate in Diesel Fuels by Spectrophotometry

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1.1 This test method covers a procedure for the determination of 0.03 % to 0.30 % by volume of alkyl nitrate in diesel fuels.

1.2 This test method can be used for the determination of any alkyl nitrate in diesel fuel provided that standards used for calibration contain the same alkyl nitrate ester as the test specimens to be analyzed.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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 hazard statements, see Section 7.

1.5 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.


4.1 In diesel fuel, the presence of alkyl nitrates such as amyl nitrate, hexyl nitrate, or octyl nitrate causes a higher residue value than observed in untreated fuel, which can lead to erroneous conclusions as to the coke forming propensity of the fuel. The presence of such alkyl nitrate in the fuel can be determined using this test method. This test method can be used to determine the amount of alkyl nitrate that has been added to diesel fuel to improve Cetane Number. The test method is applicable as a basis for judging compliance with specifications covering any alkyl nitrate.

SDO ASTM: ASTM International
Document Number D4046
Publication Date April 15, 2019
Language en - English
Page Count 3
Revision Level 14(2019)
Supercedes
Committee D02.03
Publish Date Document Id Type View
April 15, 2019 D4046-14R19 Revision
June 1, 2014 D4046-14 Revision
June 1, 2011 D4046-11 Revision
May 1, 2005 D4046-91R05 Reaffirmation
April 10, 2000 D4046-91R00E01 Reaffirmation