Standard Withdrawn, No replacement   Last Updated: Jan 10, 2023 Track Document
ASTM D460-91(2014)

Standard Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products (Withdrawn 2023)

Standard Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products (Withdrawn 2023) D0460-91R14 ASTM|D0460-91R14|en-US Standard Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products (Withdrawn 2023) Standard new BOS Vol. 15.04 Committee D12
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Significance and Use

3.1 Soap and soap products are widely used. These test methods are suitable for setting specifications and performing quality control on soap and soap products.


1.1 These test methods cover the sampling and chemical analysis of cake, powdered, flake, liquid, and paste soaps, and soap products.

1.2 The test methods appear in the following order:




General Requirements


Cake Soaps, Flake and Powdered Soap Products when Packed in Cans or Cartons


Flake and Powdered Soap Products when in Bulk


Liquid Soap


Paste Soap Products


Preparation of Samples


Test Methods for Chemical Analysis

Safety Precautions


Purity of Reagents


Duplicate Tests



 Choice of Method


 Method A—Matter Volatile at 105°C (Oven Method)


 Method B—Distillation Method

15 – 18

Total Matter Insoluble in Alcohol

19 and 20

Free Alkali or Free Acid


Matter Insoluble in Water


Total Alkalinity of Matter Insoluble in Alcohol, Alkaline Salts


Combined Alkali, Total Anhydrous Soap

24 and 25

Combined Sodium and Potassium Oxides

26 – 29

Free Alkali and Potassium Carbonate in Potash Paste Soaps

30 – 32

Unsaponified plus Unsaponifiable Matter

33 – 35

Unsaponifiable Matter

36 – 38

Unsaponified Matter


Rosin (McNicoll Method)

40 – 43

Preparation of Total Fatty Matter, Fatty and Rosin Acids, and Unsaponified Matter

44 and 45

Titer Test

46 and 47

Acid Number of Fatty Acids

48 and 49

Iodine Number (Wijs Method)

50 – 52


53 – 55


56 – 58

Silica Present as Alkaline Silicates

59 and 60

Carbon Dioxide (Carbonates):


 Train-Absorption Method

61 – 64

 Evolution-Volumetric Method

65 – 68


69 – 76

Tetrasodium Pyrophosphate

77 – 79


80 and 81

Glycerine, Sugars, and Starch:


 Glycerine in the Absence of Sugars

82 – 84

 Glycerine in the Presence of Sugars

85 and 86


87 and 88


89 and 90

 Volatile Hydrocarbons

91 – 95

 Copper (Trace Amounts)

 96 – 102

 Precision and Bias


1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 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. For specific hazard statements, see Section 10. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.

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