ASTM-D976 Standard Test Method for Calculated Cetane Index of Distillate Fuels

ASTM-D976 - 2006 R16 EDITION - CURRENT
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Standard Test Method for Calculated Cetane Index of Distillate Fuels
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Scope

1.1 This test method covers 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.2

1.2 The Calculated Cetane Index is not an optional method for expressing ASTM cetane number. It is a supplementary tool to estimate 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: This test method is 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 D976 and aromatics concentration. Test Method D4737 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.

Keywords

cetane; cetane index; diesel fuel;; ICS Number Code 75.160.20 (Liquid fuels)

To find similar documents by ASTM Volume:

05.01 (Petroleum Products and Lubricants (I): D56 - D3710)

To find similar documents by classification:

75.160.20 (Liquid fuels Including gasoline, diesel, kerosene, etc.)

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Document Number

ASTM-D976-06(2016)

Revision Level

2006 R16 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

May 15, 2016

Document Type

Test Method

Page Count

3 pages

Committee Number

D02.E0