ASTM D914-00
(Test Method)Standard Test Methods for Ethylcellulose
Standard Test Methods for Ethylcellulose
SCOPE
1.1 These test methods cover the testing of ethylcellulose.
1.2 The test procedures appear in the following order: SectionsMoisture4 to 6Sulfated Ash7 to 11Chlorides (as Sodium Chloride)12 to 16Ethoxyl Content20 to 24Viscosity25 to 39
1.3 This standard may involve hazardous materials, operations, and equipment. 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: D 914 – 00
Standard Test Methods for
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Ethylcellulose
This standard is issued under the fixed designation D 914; 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.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope specifications are available. Where such specifications have
not been established, reagents of the best grade available shall
1.1 These test methods cover the testing of ethylcellulose.
be used. References to water shall be understood to mean
1.2 The test procedures appear in the following order:
distilled water.
Sections
Moisture 4 to 6
MOISTURE
Sulfated Ash 7 to 11
Chlorides (as Sodium Chloride) 12 to 16
Ethoxyl Content 20 to 24 4. Scope
Viscosity 25 to 39
4.1 This test method covers the determination of the volatile
1.3 This standard may involve hazardous materials, opera-
content of ethylcellulose.
tions, and equipment. This standard does not purport to
5. Significance and Use
address all of the safety concerns, if any, associated with its
use. It is the responsibility of the user of this standard to
5.1 The results of this test are used for calculating the total
establish appropriate safety and health practices and deter-
solids in the sample and, by common usage, all materials
mine the applicability of regulatory limitations prior to use.
volatile at this test temperature are designated as moisture.
5.2 Moisture analysis (along with sulfated ash) is used to
2. Referenced Documents
calculatetheamountofactivepolymerinthematerialandshall
2.1 ASTM Standards:
be considered when determining the amount of ethylcellulose
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D 362 Specification for Industrial Grade Toluene
in various functions.
D 446 Specifications and Operating Instructions for Glass
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6. Apparatus
Capillary Kinematic Viscometers
4
D 841 Specification for Nitration Grade Toluene
6.1 Oven, gravity convection, capable of maintaining a
D 4794 Test Method for Determination of Ethoxyl or Hy-
temperature of 105 6 3°C.
droxyethoxyl Substitution in Cellulose Ether Products by
6.2 Weighing Bottles.
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Gas Chromatography
6.3 Analytical Balance.
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E 1 Specification for ASTM Thermometers
7. Procedure
3. Purity of Reagents and Materials
7.1 Weigh accurately 2 to5gofthe sample to the nearest
3.1 Reagent grade chemicals shall be used in all tests.
0.001 g into a tared dish (fitted with a lid) and dry for2hinan
Unless otherwise indicated, all of the reagents used shall
oven at 100 to 105°C. Remove the dish from the oven, cover
conform to the specifications of the Committee on Analytical
with a lid, cool in a desiccator, and weigh.
Reagents of the American Chemical Society, where such
8. Calculation
8.1 Calculate the percent moisture, M as follows:
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These test methods are under the jurisdiction of ASTM Committee D01 on
M 5 A/B! 3 100 (1)
~
Paint and Related Coatings, Materials, and Applications, and are the direct
responsibility of Subcommittee D01.36 on Cellulose and Cellulose Derivatives.
Current edition approved Nov. 10, 2000. Published January 2001. Originally
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published as D 914 – 47 T. Last previous edition D 914 – 95.
Reagent Chemicals, American Chemical Society Specifications, American
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Discontinued 1989; see 1988 Annual Book of ASTM Standards, Vol 06.03.
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
3
Annual Book of ASTM Standards, Vol 05.01.
listed by the American Chemical Society, see Analar Standards for Laboratory
4
Annual Book of ASTM Standards, Vol 06.04.
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
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Annual Book of ASTM Standards, Vol 06.03.
and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
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Annual Book of ASTM Standards, Vol 14.03.
MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 914
16.2 Bias—No statement of bias can be made as no suitable
where:
reference material is available as a standard.
A = mass loss on heating, g, and
B = sample used, g.
CHLORIDES (as Sodium Chloride)
9. Precision and Bias
17. Scope
9.1 Precision—Statistical analysis of intralaboratory (re-
17.1 This test method covers the determination of the
peatability) test results indicates a precision of 65 % at the
chloride content of ethylcellulose.
95 % confidence level.
9.2 Bias—No statement of bias can be made as no suitable
18. Significance and Use
reference material is available as a standard.
18.1 Sodium chloride is a major by-product of the ethylcel-
lulose manufacturing process. Thi
...
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