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ASTM D1439-03

(Test Method)

Standard Test Methods for Sodium Carboxymethylcellulose

Standard Test Methods for Sodium Carboxymethylcellulose

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.
SCOPE
1.1 These test methods cover the testing of sodium carboxymethylcellulose.
1.2 The test procedures appear in the following order:SectionsMoistureDegree of Etherification:Test Method A-Acid WashTest Method B-Nonaqueous Titration10, 11, ViscosityPuritySodium GlycolateSodium ChlorideDensity
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

Status
Historical
Publication Date
30-Nov-2003
ICS
85.040 - Pulps
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.36 - Cellulose and Cellulose Derivatives
Current Stage
Ref Project

Relations

Replaces
ASTM D1439-97 - Standard Test Methods for Sodium Carboxymethylcellulose
Effective Date
01-Dec-2003
Replaced By
ASTM D1439-03(2008)e1 - Standard Test Methods for Sodium Carboxymethylcellulose
Effective Date
01-Jun-2008

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ASTM D1439-03 - Standard Test Methods for Sodium Carboxymethylcellulose
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1439–03
Standard Test Methods for
1
Sodium Carboxymethylcellulose
This standard is issued under the fixed designation D 1439; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
4
1. Scope Reagents of the American Chemical Society , where such
specifications are available. Other grades may be used, pro-
1.1 These test methods cover the testing of sodium car-
vided it is first ascertained that the reagent is of sufficiently
boxymethylcellulose.
high purity to permit its use without lessening the accuracy of
1.2 The test procedures appear in the following order:
the determination.
Sections
3.2 Unless otherwise indicated, references to water shall be
Moisture 4-9
Degree of Etherification:
understood to mean distilled water.
Test Method A—Acid Wash 10-17
Test Method B—Nonaqueous Titration 10, 11, 18-23
MOISTURE
Viscosity 24-30
Purity 31-38
4. Scope
Sodium Glycolate 39-47
Sodium Chloride 48-55
4.1 Thistestmethodcoversthedeterminationofthevolatile
Density 56-62
content of sodium carboxymethylcellulose.
1.3 The values stated in SI units are to be regarded as the
4.2 The results of this test are used for calculating the total
standard. The values given in parentheses are for information
solids in the sample; and, by common usage, all materials
only.
volatile at this test temperature are designated as moisture.
1.4 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 Moistureanalysis(alongwithpurity)isusedtocalculate
priate safety and health practices and determine the applica-
the amount of active polymer in the material and must be
bility of regulatory limitations prior to use. For specific hazard
consideredwhendeterminingtheamountofsodiumcarboxym-
statements, see 15.1 and 20.
ethylcellulose to use in various formulations.
2. Referenced Documents
6. Apparatus
2
2.1 ASTM Standards:
6.1 Oven—Gravity convection oven, capable of maintain-
3
D 1347 Test Methods for Methylcellulose
ing a temperature of 105 6 3°C.
E1 Specification forASTM Liquid-in-Glass Thermometers
6.2 Weighing Bottles, low-form, 50-mm inside diameter by
30-mm height, or equivalent.
3. Purity of Reagents
6.3 Analytical Balance.
3.1 Reagent grade chemicals shall be used in all tests.
7. Procedure
Unless otherwise indicated, it is intended that all reagents shall
conform to the specifications of the Committee on Analytical
7.1 Weigh3to5gofthe sample to the nearest 0.001 g in a
tared and covered weighing bottle.
7.2 Place the bottle in an oven at 105°C for 2 h with the
cover removed. Cool the bottle in a desiccator, replace the
1
These test methods are under the jurisdiction of ASTM Committee D01 on
cover, and weigh.
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.36 on Cellulose and Cellulose Derivatives.
Current edition approved Dec. 1, 2003. Published January 2004. Originally
4
approved in 1956. Last previous edition approved in 1997 as D 1439 – 97. Reagent Chemicals, American Chemical Society Specifications, American
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Chemical Society, Washington, DC. For suggestions on the testing of reagents not
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM listed by the American Chemical Society, see Analar Standards for Laboratory
Standards volume information, refer to the standard’s Document Summary page on Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
the ASTM website. and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
3
Withdrawn. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1439–03
7.3 Replace the sample in the oven for 30 min, cool, and should be essentially water-white. It will give a deep blue
reweigh. coloration with traces of nitrate or other oxidizing agents.
7.4 Continue this procedure to a mass loss of not more than
14.2 Ethyl Alcohol (95 volume %)—Denatured ethyl alco-
5 mg for 30 min drying time. hol conforming to either Formula 2B, 3A, or 30 of the U. S.
Bureau of Internal Revenue.
8. Calculation
14.3 Ethyl Alcohol (80 % by volume)—Dilute 840 mL of
8.1 Calculate the percent moisture, M, as follows:
Formula 2B, 3A, or 30 denatured alcohol to 1 L with water.
M 5 ~A/B! 3 100 (1) 14.4 Hydrochloric Acid, Standard (HCl, 0.3 to 0.5 N).
14.5 Met
...

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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.
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1.1 These test methods cover the testing of sodium carboxymethylcellulose.  
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