ASTM D602-81(1999)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: D 602 – 81 (Reapproved 1999)
Standard Specification for
Barium Sulfate Pigments
This standard is issued under the fixed designation D 602; 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
TABLE Continued
1.1 This specification covers the barium sulfate pigments Blanc
Barytes Fixe
commercially known as barytes and blanc fixe.
Moisture and other volatile matter, max, % 0.5 0.5
2. Referenced Documents
Coarse particles (total residue retained on 0.5 0.5
No. 325 (45-μm sieve), max, %
2.1 ASTM Standards:
Free silica (quartz, clays, or other foreign 2.0 2.0
D 185 Test Methods for Coarse Particles in Pigments,
materials), max, %
Pastes, and Paints
3.2 In such physical properties as are specified by the
D 280 Test Methods for Hygroscopic Moisture (and Other
2 purchaser, the pigment shall satisfactorily match a reference
Matter Volatile Under the Test Conditions) in Pigments
sample mutually agreed upon by the purchaser and the seller.
D 715 Test Methods for Analysis of Barium Sulfate Pig-
ment
4. Sampling
D 1208 Test Methods for Common Properties of Certain
4.1 Two samples shall be taken at random from different
Pigments
packages from each lot, batch, day’s pack, or other unit of
production in a shipment. When no markings distinguishing
3. Composition and Properties
between units of production appear, samples shall be taken
3.1 The pigment shall consist of barium sulfate (BaSO )
from different packages in the ratio of two samples of each
without any admixture of other materials in the case of blanc
10 000 lb (5000 kg), except that for shipments of less than
fixe, and without any admixture of other materials not naturally
10 000 lb two samples shall be taken. At the option of the
occurring in the barite ore in the case of barytes, and which
purchaser, the samples may be tested separately or after
conform to the following requirements:
blending in equal quantities the samples from the same
production unit to form a composite sample.
Blanc
Barytes Fixe
5. Test Methods
Barium sulfate, min, % 94 97
5.1 Tests shall be conducted in accordance with the follow-
Ferric oxide, max, % 0.05 0.02
pH, min 3.5 3.5
ing
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