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Significance and Use
3.1 This test method is intended for the determination of organically combined sulfuric anhydride in sulfated oils.
1.1 This test method covers the determination of the organically combined sulfuric anhydride existing in a sample of sulfated oil by extracting the undecomposed sulfated fat and other fatty matter over an acidulated, concentrated salt solution, boiling the residue with sulfuric acid after evaporating the solvent, and titrating the products of reaction. This test method is applicable only to sulfated oils that split off their combined SO3 upon boiling with mineral acids, including samples containing sodium acetate or other compounds that cannot be accurately titrated in water solution with methyl orange as the indicator. This test method was derived from Test Methods , Sections 20 through 24, and ALCA Method H-43.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided 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.
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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D500 Test Methods of Chemical Analysis of Sulfonated and Sulfated Oils
ICS Number Code 71.080.01 (Organic chemicals in general)
UNSPSC Code 11162300(Leathers)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D5351-93(2017), Standard Test Method for Determination of Organically Combined Sulfuric Anhydride by Extraction Titration, Test Method B, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top