---
title: "ASTM D1439"
url: "https://mat-cs.com/astm-d1439"
description: "These test methods cover the testing of sodium carboxymethylcellulose."
---

ASTM Standard

# ASTM D1439

Standard Test Methods for Sodium Carboxymethylcellulose

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## Significance and Use

5.1 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.

## Scope

1.1 These test methods cover the testing of sodium carboxymethylcellulose.

1.2 The test procedures appear in the following order:

Sections

Moisture

4 – 9

Degree of Etherification:

Test Method A—Acid Wash

10 – 17

Test Method B—Nonaqueous Titration

10, 12, 18 – 23

Viscosity

24 – 29

Purity

30 – 37

Sodium Glycolate

38 – 46

Sodium Chloride

47 – 54

Density

55 – 61

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