Standard Specification for Calcium Borosilicate Pigments

SCOPE
1.1 This specification covers three grades of pigment commercially known as calcium borosilicate composite pigment. The two types differ in chemical composition while the two classes of Type I differ in oil absorption.

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Publication Date
31-Dec-1995
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ASTM D4288-83(1996)e1 - Standard Specification for Calcium Borosilicate Pigments
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e1
Designation: D 4288 – 83 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Calcium Borosilicate Pigments
This standard is issued under the fixed designation D 4288; 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.
e NOTE—Keywords were added editorially in May 1996.
1. Scope maximum specific surface diameter (SSD) shall be 2.5.
3.3.2 Where closer control within a grade or type is re-
1.1 This specification covers three grades of pigment com-
quired, the fineness requirements shall be as agreed upon
mercially known as calcium borosilicate composite pigment.
between the purchaser and the seller.
The two types differ in chemical composition while the two
classes of Type I differ in oil absorption.
4. Sampling
2. Referenced Documents 4.1 Two samples shall be taken at random from different
packages from each lot, batch, day’s pack, or other unit of
2.1 ASTM Standards:
production in a shipment. When no markings distinguishing
C 958 Test Method for Particle Size Distribution of Alu-
between units of production appear, samples shall be taken
mina or Quartz by X-Ray Monitoring of Gravity Sedimen-
2 from different packages, in the ratio of two samples for each
tation
10 000 lb (5000 kg), except that for shipments of less than
D 185 Test Methods for Coarse Particles in Pigments,
3 10 000 lb two samples shall be taken. At the option of the
Pastes, and Paints
purchaser, the samples may be tested separately or after
D 281 Test Method for Oil Absorption of Pigments by
4 blending in equal quantities the samples from the same
Spatula Rub-Out
production unit to form a composite sample.
D 1366 Practice for Reporting Particle Size Characteristics
of Pigments
5. Test Methods
D 3360 Test Method for Particle Size Distribution by Hy-
5.1 Tests shall be conducted in accordance with the follow-
drometer of the Common White Extender Pigments
3 ing ASTM test methods. Test procedures not covered by ASTM
D 4487 Test Method for Analysis of Calcium Borosilicate
test methods shall be mutually agreed upon between the
3. Composition and Properties purchaser and the seller.
5.2 Chemical Analysis—Test Methods D 4487.
3.1 All types of pigment shall consist of a complex com-
5.3 Ignition Loss—Test Methods D 4487.
posite of alkaline earth silicates and borates and shall conform
5.4 Particle Size—To be determined by Test Method
to the requirements of Table 1.
D 3360 or equivalent instrumental technique.
3.2 The mass color of the dry pigment is white. The shade
5.5 Specific Surface Diameter—Particle Size by Sedimen-
...

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