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ASTM D976-04

Historical Revision

Standard Test Method for Calculated Cetane Index of Distillate Fuels

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1.1 These test methods cover the Calculated Cetane Index formula, which represents a means for directly estimating the ASTM cetane number of distillate fuels from API gravity and mid-boiling point. The index value, as computed from the formula, is termed the Calculated Cetane Index.

1.2 The Calculated Cetane Index is not an optional method for expressing ASTM cetane number. It is a supplementary tool for predicting cetane number when used with due regard for its limitations.

1.3 The Calculated Cetane Index formula is particularly applicable to straight-run fuels, catalytically cracked stocks, and blends of the two.

Note 1—These test methods are temporarily retained because the proposal to the U.S. EPA to control diesel fuel aromatics concentrations via a 40 Calculated Cetane Index minimum is based on the correlation between Test Method D 976 and aromatics concentration. Test Method D 4737 is the preferred method as estimator of cetane number.

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 and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number D976
Publication Date June 1, 2004
Language en - English
Page Count 3
Revision Level 04
Supercedes
Committee D02.E0
Publish Date Document Id Type View
Nov. 1, 2021 D0976-21E01 Revision
Nov. 1, 2021 D0976-21 Revision
Dec. 1, 2006 D0976-06 Revision
Dec. 1, 2004 D0976-04BE01 Revision
Dec. 1, 2004 D0976-04B Revision
Aug. 1, 2004 D0976-04A Revision
June 1, 2004 D0976-04 Revision
Jan. 1, 2000 D0976-91R00E01 Revision
Not Available D0976-91R95E01 Revision
Not Available D0976-80R90E01 Revision
April 1, 2016 D0976-06R16 Reaffirmation
Oct. 1, 2011 D0976-06R11 Reaffirmation