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Standard Test Method for Determination of Free and Total Glycerin in Biodiesel Blends by Anion Exchange ChromatographyTranslate name
STANDARD published on 1.5.2017
Designation standards: ASTM D7591-12(2017)
Publication date standards: 1.5.2017
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM
biodiesel blends, free glycerin, glycerin, ion chromatography, total glycerin,, ICS Number Code 75.160.20 (Liquid fuels)
|Significance and Use|
5.1 Petroleum-based diesel may be blended with biodiesel. High levels of free glycerin in biodiesel can cause injector deposits (“gel effect”), as well as clogging fuel systems. High levels of unreacted glycerides can cause injector deposits and can adversely affect cold weather operation and filter plugging.
1.1 This test method covers and describes an anion exchange chromatography procedure for determining free and total glycerin content of biodiesel (B100) and blends (B0 to B20) with diesel fuel oils defined by Specification Grades 1-D, 2-D, and low sulfur 1-D and 2-D and Specification (for B100 feedstocks). It is intended for the analysis of biodiesel and blend samples containing between 0.5 mg/kg to 50 mg/kg glycerin.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
1.4 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.
|2. Referenced Documents|
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