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ASTM D5559-95(2017)

Historical Reaffirmation

Standard Test Method for Determination of Acidity as Free Fatty Acids/Acid Number in the Absence of Ammonium or Triethanolamine Soaps in Sulfonated and Sulfated Oils

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1.1 This test method covers the determination of the acidity as free fatty acids existing in a sample of sulfonated or sulfated oil, or both, by titrating the sample dissolved in a solvent. It is not applicable in the presence of ammonium or triethanolamine soaps or salts or other compounds that do not react neutral to phenolphthalein when dissolved in alcohol.

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.


2.1 This test method is intended for use in the determination of the acidity as free fatty acids in the absence of ammonium or triethanolamine soaps in sulfonated and sulfated oils for the purpose of quality assurance.

SDO ASTM: ASTM International
Document Number D5559
Publication Date April 1, 2017
Language en - English
Page Count 2
Revision Level 95(2017)
Supercedes
Committee D31.08
Publish Date Document Id Type View
May 15, 1995 D5559-95 Revision
Dec. 1, 2023 D5559-95R23 Reaffirmation
April 1, 2017 D5559-95R17 Reaffirmation
Jan. 1, 2011 D5559-95R11 Reaffirmation
April 1, 2006 D5559-95R06 Reaffirmation
May 15, 1995 D5559-95R01 Reaffirmation