ASTM D2364-01
(Test Method)Standard Test Methods for Hydroxyethylcellulose
Standard Test Methods for Hydroxyethylcellulose
SCOPE
1.1 These test methods cover the testing of hydroxyethylcellulose.
1.2 The test procedures appear in the following order: SectionsMoisture4-9Ash10-17 Viscosity18-24Density25-31
1.3 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.
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Designation:D2364–01
Standard Test Methods for
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Hydroxyethylcellulose
This standard is issued under the fixed designation D 2364; 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.
1. Scope vided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
1.1 These test methods cover the testing of hydroxyethyl-
the determination.
cellulose.
3.2 Unless otherwise indicated, reference to water shall be
1.2 The test procedures appear in the following order:
understood to mean reagent water, conforming to Specification
Sections
D 1193.
Moisture 4-9
Ash 10-17
Viscosity 18-24
MOISTURE
Density 25-31
4. Scope
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 4.1 This test method covers the determination of the volatile
content of hydroxyethylcellulose.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use.
5.1 The results of this test are used for calculating the total
2. Referenced Documents
solids in the sample; and, by common usage, all materials
volatile at this test temperature are designated as moisture.
2.1 ASTM Standards:
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D 1193 Specification for Reagent Water 5.2 Moisture analysis (along with sulfated ash) is a measure
of the amount of active polymer in the material and must be
D 4794 Test Method for Determination of Ethoxyl or Hy-
droxyethoxyl Substitution in Cellulose Ether Products by considered when determining the amount of hydroxyethyl
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cellulose to use in various formulations.
Gas Chromatography
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E1 Specification for ASTM Thermometers
6. Apparatus
3. Purity of Reagents
6.1 Oven, gravity-convection, capable of maintaining a
temperature of 105 6 3°C.
3.1 Reagent grade chemicals shall be used in all tests.
Unless otherwise indicated, it is intended that all reagents shall 6.2 Weighing Bottles, low-form, 50 mm in inside diameter
by 30 mm in height, or equivalent.
conform to the specifications of the Committee on Analytical
Reagents of the American Chemical Society, where such 6.3 Analytical Balance.
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specifications are available. Other grades may be used, pro-
7. Procedure
7.1 Weigh5gofsampletothenearest0.001ginataredand
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covered weighing bottle.
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct
7.2 Place it in an oven at 105°C for 2 h with the cover
responsibility of Subcommittee D01.36 on Cellulose and Cellulose Derivatives.
removed. Replace the cover, cool in a desiccator, and weigh.
Current edition approved June 10, 2001. Published August 2001. Originally
published as D 2364 – 65 T. Last previous edition D 2364 – 96.
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8. Calculation
Annual Book of ASTM Standards, Vol 11.01.
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Annual Book of ASTM Standards, Vol 06.03.
8.1 Calculate the percent moisture, M, as follows:
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Annual Book of ASTM Standards, Vol 14.03.
5
Reagent Chemicals, American Chemical Society Specifications, American M 5 ~A/B! 3 100 (1)
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
listed by the American Chemical Society, see Analar Standards for Laboratory
where:
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
A = mass loss on heating, g, and
and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
B = sample used, g.
MD.
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D2364–01
9. Precision and Bias 17. Precision and Bias
9.1 Statistical analysis of intralaboratory (repeatability) test
17.1 Statistical analysis of interlaboratory (reproducibility)
results on samples containing from about 3.5 % moisture
test results on samples containing 2 to 5 % ash (as sulfate)
indicate a precision of 60.5 % absolute at the 95 % confidence
indicates a precision of 60.3 % absolute at the 95 % level.
level.
17.2 No statement on bias can be made as no suitable
9.2 No statement on bias can be made as no suitable
reference material is available as a standard.
reference material is available as a standard.
VISCOSITY
ASH—AS SULFATE
18. Scope
10. Scope
18.1 This test method is an arbitrary method of determining
10.1 This test method covers the determination of the
the viscosity of aqueous solutions of hydroxyethylcellulose in
residue on ignition of hydroxyethylcellulose after a sp
...
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