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.
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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 the 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
acidity; alkalinity, pH-detergent materials; detergent materials/systems-soaps; pH; pH-aqueous solutions of soaps/detergents, test;
ICS Number Code 71.100.40 (Surface active agents)
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Citing ASTM Standards
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