ASTM-D7576 Standard Test Method for Determination of Benzene and Total Aromatics in Denatured Fuel Ethanol by Gas Chromatography

ASTM-D7576 - 2016 EDITION - CURRENT
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Standard Test Method for Determination of Benzene and Total Aromatics in Denatured Fuel Ethanol by Gas Chromatography
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Scope

1.1 This test method covers the determination of benzene and total aromatics in finished denatured fuel ethanol by gas chromatography.

1.2 Total aromatics are determined by adding the concentrations of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, and C9 and heavier aromatics.

1.3 The aromatic hydrocarbons are separated without interferences from other hydrocarbons in denatured fuel ethanol. Nonaromatic hydrocarbons having boiling point greater than that of n-dodecane can cause interferences with the determination of the C9 and heavier aromatics. For the C8 aromatics, p-xylene and m-xylene co-elute while ethylbenzene and o-xylene are separated. The C9 and heavier aromatics are determined as a single group.

1.4 This test method covers the following concentration ranges: benzene, 0.01 % to 0.08 % by mass and total aromatics, 0.29 % to 2.67 % by mass.

1.5 Results are reported to the nearest 0.01 % by mass or liquid volume.

1.6 The values stated in SI units are to be regarded as standard.

1.6.1 Exception—The values given in parentheses are provided for information only; they may not be exact equivalents.

1.7 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

aromatics; benzene; denatured fuel ethanol; ethylbenzene; gas chromatography; toluene; xylenes;; ICS Number Code 75.160.20 (Liquid fuels)

To find similar documents by ASTM Volume:

05.04 (Petroleum Products and Lubricants (IV): D6973 - latest)

To find similar documents by classification:

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

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Document Number

ASTM-D7576-16

Revision Level

2016 EDITION

Status

Current

Modification Type

Revision

Publication Date

April 15, 2016

Document Type

Test Method

Page Count

10 pages

Committee Number

D02.04.0L