ASTM-D820 Standard Test Methods for Chemical Analysis of Soaps Containing Synthetic Detergents

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Standard Test Methods for Chemical Analysis of Soaps Containing Synthetic Detergents



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1.1 These test methods cover procedures for the chemical analysis of soaps containing synthetic detergents.

1.2 The analytical procedures appear in the following order:

Sections Moisture and Other Matter Volatile at 105[deg]C (Oven Method) 5 and 6 Free Alkali or Free Acid 7 and 8 Anhydrous, Salt-Free, Soda Soap 9 and 12 Alcohol-Soluble Matter 13 and 14 Matter Insoluble in Water 15 Total Alkalinity of Matter Insoluble in Alcohol (Alkaline Salts) 16 and 17 Sodium Silicate 18 to 20 Phosphates 21 to 28 Phosphate (Colorimetric Method Using Molybdenum Blue) 29 to 34 Unsaponified and Unsaponifiable Matter 35 to 39 Free Fatty Matter 40 Chlorides in Alcohol-Soluble Matter 41 to 43 Rosin (McNicoll Method) 44 to 47 Synthetic Detergent (by Difference) 48 Neutral Inorganic Salts 49

1.3 This standard does not purport to address all of the safety problems, 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. >


Acid content; Alcohol-soluble matter content; Alkalies content; Anhydrous salt-free soda soap content; Chemical analysis-detergent materials; Chloride content-cleaning agents/detergents; Detergent materials/systems-soaps; Detergent materials/systems-synthetic; Fatty matter content; Inorganic salts content; McNicoll method; Moisture analysis-detergent materials; Phosphate content; Phosphorus content; Rosin acids content; Sodium silicates; Synthetic detergent content; Volatile matter content-cleaning compounds/detergents; Water-insoluble matter content; soaps containing synthetic detergents-chemical analysis, test

To find similar documents by ASTM Volume:

15.04 (Soaps and Other Detergents; Polishes; Leather; Resilient Floor Coverings)

To find similar documents by classification:

71.100.40 (Surface active agents)

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Document Number


Revision Level

1993 R23 EDITION



Modification Type


Publication Date

July 28, 2023

Document Type

Test Method

Page Count

10 pages

Committee Number