Standard Historical Last Updated: Aug 05, 2011 Track Document
ASTM D7318-07

Standard Test Method for Total Inorganic Sulfate in Ethanol by Potentiometric Titration

Standard Test Method for Total Inorganic Sulfate in Ethanol by Potentiometric Titration D7318-07 ASTM|D7318-07|en-US Standard Test Method for Total Inorganic Sulfate in Ethanol by Potentiometric Titration Standard new BOS Vol. 05.03 Committee D02
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Significance and Use

Ethanol is used as a blending agent added to gasoline. Sulfates are indicated in filter plugging deposits and fuel injector deposits. When fuel ethanol is burned, sulfates may contribute to sulfuric acid emissions. Ethanol acceptability for use depends on the sulfate content. Sulfate content, as measured by this test method, can be used as one measure of determination of the acceptability of ethanol for automotive spark-ignition engine fuel use.

Scope

1.1 This test method covers a potentiometric titration procedure for determining the total inorganic sulfate content of hydrous, anhydrous ethanol, and anhydrous denatured ethanol, which is added as a blending agent with spark ignition fuels. It is intended for the analysis of denatured ethanol samples containing between 1.0-20 mg/kg total inorganic sulfate.

1.2 The values stated in SI units are to be regarded as the standard. 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 and health practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.

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Details
Book of Standards Volume: 05.03
Developed by Subcommittee: D02.03
Pages: 6
DOI: 10.1520/D7318-07
ICS Code: 71.040.40; 75.160.20