Active Standard ASTM D1439 | Developed by Subcommittee: D01.36
Book of Standards Volume: 06.03
Historical (view previous versions of standard)
Significance and Use
Moisture analysis (along with purity) is used to calculate the amount of active polymer in the material and must be considered when determining the amount of sodium carboxymethylcellulose to use in various formulations.
1.1 These test methods cover the testing of sodium carboxymethylcellulose.
1.2 The test procedures appear in the following order:
|Degree of Etherification:|
|Test Method A—Acid Wash||10-17|
|Test Method B—Nonaqueous Titration||10, 12, 18-23|
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 15.1 and 20.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1347 Test Methods for Methylcellulose
E1 Specification for ASTM Liquid-in-Glass Thermometers
ICS Number Code 85.040 (Pulps)
UNSPSC Code 12352200(Biochemicals)