ASTM D817 : 12(2019)

Standard Test Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate

Standard Details

1.1 These test methods cover procedures for the testing of cellulose acetate propionates and acetate butyrates. These esters may vary widely in composition and properties, so certain of the procedures can be used only in the ranges of composition where they are suitable.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 The test procedures appear in the following sections:

	Sections
Acetyl Propionyl or Butyryl Contents	28 – 37
Acetyl Content, Apparent	18 – 27
Acidity, Free	12 – 17
Ash	7 – 10
Color and Haze	77 – 81
Heat Stability	57 – 65
Hydroxyl Content	38 – 44
Hydroxyl Content, Primary	46 – 50
Intrinsic Viscosity	67 – 71
Moisture Content	5-6
Sulfur or Sulfate Content	51 – 56
Viscosity	74-75
Limiting Viscosity Number	67 – 71

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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