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This guide details the standard procedures for the preparation of aqueous solutions of soaps and detergents and the determination of their pH. The required reagent for this procedure is distilled water or its equivalent, and the recommended electrodes for the determination of pH are the Fischer Accuphast combination electrode or Orion Ross Sure Flow electrode or their equivalents.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This guide covers the preparation of aqueous solutions of soaps and detergents and the determination of their pH.
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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D460 Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products
D501 Test Methods of Sampling and Chemical Analysis of Alkaline Detergents
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
ICS Number Code 71.100.40 (Surface active agents)
UNSPSC Code 53131608(Soaps); 12161902(Detergent surfactants)
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ASTM D1172-15, Standard Guide for pH of Aqueous Solutions of Soaps and Detergents, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top