ASTM D500-95(2016)

 Test Method A. Water by Distillation with Volatile Solvent

4 – 9

 Test Method B. Moisture and Volatile Matter by Hot-Plate Method

10 – 14

Organically Combined Sulfuric Anhydride:

 Test Method A. Titration Test

15 – 19

 Test Method B. Extraction-Titration Test

20 – 24

 Test Method C. Ash-Gravimetric Test (in the Presence of True
Sulfonates)

25 – 28

Total Desulfated Fatty Matter

29 – 32

Total Active Ingredients

33 – 36

Unsaponifiable Nonvolatile Matter

37 – 41

Inorganic Salts

42 – 46

Total Alkalinity

47 – 49

Total Ammonia

50 – 52

Acidity as Free Fatty Acids or Acid Number:

 Test Method A. In the Absence of Ammonium or Triethanolamine Soaps

53 – 56

 Test Method B. In the Presence of Dark Colored Oils but in the
Absence of Ammonium or Triethanolamine Soaps (Brine Test)

57 – 60

 Test Method C. In the Presence of Ammonium or Triethanolamine Soaps

61 – 63

Water-Immiscible Organic Solvents Volatile with Steam

64 – 70