ASTM D 817:2012

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 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.

85.040