ASTM D4487-90(2003)
(Test Method)Standard Test Methods for Analysis of Calcium Borosilicate
Standard Test Methods for Analysis of Calcium Borosilicate
SIGNIFICANCE AND USE
These test methods compile in one place, recommended procedures for analysis of the pigment known commercially as calcium borosilicate. This pigment is used extensively in paints and the composition is important to the user and producer.
SCOPE
1.1 These test methods cover the analysis of the pigment commercially known as calcium borosilicate.
1.3 Individual specimens may be used for the direct determinations of SiO2, B2O3, and CaO. SiO2 and Fe2O3 should be removed before the determination of the B2O3 and CaO.
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.
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Standards Content (Sample)
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Designation:D4487–90(Reapproved2003)
Standard Test Methods for
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Analysis of Calcium Borosilicate
This standard is issued under the fixed designation D 4487; 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 3. Significance and Use
1.1 These test methods cover the analysis of the pigment 3.1 These test methods compile in one place, recommended
commercially known as calcium borosilicate. procedures for analysis of the pigment known commercially as
1.2 The test methods appear in the following order: calciumborosilicate.Thispigmentisusedextensivelyinpaints
and the composition is important to the user and producer.
Test Methods Sections
Silicon Dioxide (SiO)6-9
2
Iron Oxide (Fe O ) 10-13
4. Reagents
2 3
Boron Trioxide (B O ) 17-20
2 3
4.1 Purity of Reagents—Reagent grade chemicals shall be
Calcium Oxide (CaO) 21-23
Moisture and Volatile Matter 24
used in all tests. Unless otherwise indicated, it is intended that
Water of Hydration 25 to 26
all reagents shall conform to the specifications of the Commit-
Coarse Particles 27
tee on Analytical Reagents of the American Chemical Society
Oil Absorption 28
3
where such specifications are available. Other grades may be
1.3 Individual specimens may be used for the direct deter-
used, provided it is first ascertained that the reagent is of
minations of SiO ,B O , and CaO. SiO and Fe O should be
2 2 3 2 2 3
sufficiently high purity to permit its use without lessening the
removed before the determination of the B O and CaO.
2 3
accuracy of the determination.
1.4 The values stated in SI units are to be regarded as the
4.2 Purity of Water—Unless otherwise indicated, references
standard. The values given in parentheses are for information
to water shall be understood to mean reagent water conforming
only.
to Type II of Specification D 1193.
1.5 This standard does not purport to address all of the
4.3 Concentration of Acids and Ammonium Hydroxide—
safety concerns, if any, associated with its use. It is the
When acids and ammonium hydroxide are specified by name
responsibility of the user of this standard to establish appro-
or chemical formula only, it should be understood that concen-
priate safety and health practices and determine the applica-
trated reagents of the following specific gravity are intended:
bility of regulatory limitations prior to use.
Hydrochloric acid (HCl) 1.19
Nitric acid, (HNO ) 1.42
3
2. Referenced Documents
Sulfuric acid (H SO ) 1.84
2 4
2
Ammonium hydroxide (NH OH) 0.90
2.1 ASTM Standards: 4
D 185 Test Methods for Coarse Particles in Pigments,
5. Preparation of Samples
Pastes, and Paints
5.1 Thoroughly mix and comminute the sample before
D 280 Test Methods for Hygroscopic Moisture (and Other
taking portions for analysis.
Matter Volatile Under the Test Conditions) in Pigments
D 281 Test Method for Oil Absorption of Pigments by
SILICON DIOXIDE
Spatula Rub-Out
D 1193 Specification for Reagent Water
6. Apparatus
6.1 Evaporating Casserole, 250-mL capacity.
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6.2 Hot Plate.
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.31 on Pigment Specifications.
3
Current edition approved Dec. 1, 2003. Published December 2003. Originally Reagent Chemicals, American Chemical Society Specifications, American
approved in 1985. Last previous edition approved in 1990 as D 4487 – 90 (1999). Chemical Society, Washington, DC. For suggestions on the testing of reagents not
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D4487–90 (2003)
6.3 Porcelain Filtering Crucible, medium porosity, 30-mL 10°C. Prepare fresh indicator when the end point of the
capacity. titration from blue to colorless fails to be sharp.
6.4 Drying Oven, maintained at 100 6 5°C. 11.4 Sulfuric acid (H SO ) (1+18).
2 4
6.5 Muffle Furnace. 11.5 Sodium Thiosulfate, Standard Solution (0.025 N)—
Dissolve 1.5 g of sodium thiosulfate (Na S O ·5H O) in 50
2 2 3 2
7. Reagents
mL o
...
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