4.1 Moisture content of the cellulose ester can be used to estimate the dry weight of the cellulose ester. Since cellulose esters are desiccants, their moisture content can vary greatly depending on storage.

1.1 These test methods cover procedures for testing cellulose acetate.

1.2 The test procedures appear in the following sections:

Sections

Ash

 8 to 11

Color and Haze

67 to 72

Combined Acetyl or Acetic Acid Content

 Test Method A. Solution Method

17, 19 to 23

 Test Method B. Heterogeneous Saponification Method

17, 24 to 26

Free Acidity

12 to 16

Heat Stability

47 to 56

Hydroxyl Content

27 to 33

Intrinsic Viscosity

57 to 62

Moisture Content

 4 to 7

Primary Hydroxyl Content

34 to 39

Sulfur or Sulfate Content

40 to 45

Viscosity

63 to 66

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

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 Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.