ASTM D5562 - 95(2011)

    Standard Test Method for Determination of the Acidity as Free Fatty Acids/Acid Number in the Presence of Ammonium or Triethanolamine Soaps

    Active Standard ASTM D5562 | Developed by Subcommittee: D31.08

    Book of Standards Volume: 15.04


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    ASTM D5562

    Significance and Use

    This test method is intended for use in the determination of the acid number of sulfonated and sulfated oils for the purpose of quality assurance.

    1. Scope

    1.1 This test method covers determination of the acidity as free fatty acids in the presence of ammonium or triethanolamine soaps, or both, existing in a sample of sulfonated or sulfated oil, or both, by calculation from the total alkalinity and free-and-alkali combined fatty acids.

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


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D5350 Test Method for Determination of Organically Combined Sulfuric Anhydride by Titration, Test Method A


    ICS Code

    ICS Number Code 71.080.40 (Organic acids)

    UNSPSC Code

    UNSPSC Code 12352211(Fats or lipids)


    DOI: 10.1520/D5562-95R11

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