ASTM D820-93(2003) - 17.5.1993
 
1. Scope

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°C (Oven Method)5 and 6
Free Alkali or Free Acid7 and 8
Anhydrous, Salt-Free, Soda Soap9-12
Alcohol-Soluble Matter13 and 14
Matter Insoluble in Water15
Total Alkalinity of Matter Insoluble in Alcohol (Alkaline Salts)16 and 17
Sodium Silicate18-20
Phosphates21-28
Phosphate (Colorimetric Method Using Molybdenum Blue)29-34
Unsaponified and Unsaponifiable Matter35-39
Free Fatty Matter40
Chlorides in Alcohol-Soluble Matter41-43
Rosin (McNicoll Method)44-47
Synthetic Detergent (by Difference)48
Neutral, Inorganic Salts49

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.

 
2. Referenced Documents

D459-16(2025)

Standard Terminology Relating to Soaps and Other Detergents

D875-64

Method for Calculating of Olefins and Aromatics in Petroleum Distillates from Bromine Number and Acid Absorption

D216-77(1982)

Method of Test for Distillation of Natural Gasoline (Withdrawn 1988)

D2357-11(2024)

Standard for Qualitative Classification of Surfactants by Infrared Absorption

D2358-16(2024)

Standard Test Method for Separation of Active Ingredient from Surfactant and Syndet Compositions

D3049-89(2024)

Standard Test Method for Synthetic Anionic Ingredient by Cationic Titration

D1768-89(2024)

Standard Test Method for Sodium Alkylbenzene Sulfonate in Synthetic Detergents by Ultraviolet Absorption

D1193-24

Standard Specification for Reagent Water