D500 (version 95(2023))

1.1 These test methods cover the chemical analysis of sulfonated and sulfated oils. The analytical procedures appear in the following order:

 

Section

 

 

Moisture:

 

 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

1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

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, health, and environmental 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.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.