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ASTM D5974-96

Historical Revision

Standard Test Methods for Fatty and Rosin Acids in Tall Oil Fractionation Products by Capillary Gas Chromatography

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1.1 These test methods cover the determination of the amounts of the individual fatty acids and rosin acids in fractionated tall oil products, using capillary gas chromatographic separation of the volatile methyl esters of these acids.

1.2 Four methods for forming the methyl esters, and two methods for determining the amounts of the individual fatty acids and rosin acids are described.

1.2.1 The classic method for the formation of methyl esters is through the use of diazomethane, but diazomethane is a hazardous and toxic material, and so is no longer the preferred reagent. The use of diazomethane is detailed in the Appendix. Methyl esters may be formed through the use of tetramethylammonium hydroxide (TMAH), trimethylphenylammonium hydroxide (TMPAH), or N,N-dimethylformamide dimethyl acetal (DMF-DMA).

1.2.2 The two methods for determining the amount of the individual fatty acids and rosin acids are the "internal standard" method, which yields absolute values, and the "area percent" method, which yields relative values.

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.


SDO ASTM: ASTM International
Document Number D5974
Publication Date Nov. 10, 2000
Language en - English
Page Count 5
Revision Level 96
Supercedes
Committee D01.34
Publish Date Document Id Type View
Sept. 1, 2020 D5974-20 Revision
July 1, 2015 D5974-15 Revision
Nov. 10, 2000 D5974-96 Revision
Nov. 10, 2000 D5974-00 Revision
June 1, 2010 D5974-00R10 Reaffirmation
Dec. 1, 2005 D5974-00R05 Reaffirmation