ASTM D1649-01

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 1649 – 01
Standard Specification for
1
Strontium Chromate Pigment
This standard is issued under the fixed designation D 1649; 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
percent
1.1 This specification covers the pigment commercially
Strontium as SrO, min 48
known as strontium chromate which is suitable for use in the
Chromium as CrO ,min 47
3
Chloride as Cl, max 0.1
manufacture of protective or decorative coatings.
Sulfate as SO , max 0.2
3
1.2 The values stated in SI units are to be regarded as the
Water content, max 0.2
standard. The values given in parentheses are for information
Coarse particles (total residue retained on No. 1.0
325 (45-µm) sieve), max
only.
3.2 The mass color and character of the tint and tinting
2. Referenced Documents
strength formed by a mixture with a white pigment shall be
2.1 ASTM Standards:
within mutually agreed upon limits of a standard acceptable to
D 387 Test Method for Color and Strength of Color Pig-
both the purchaser and the seller when tested in accordance
2
ments with a Mechanical Muller
with Test Method D 387.
D 1208 Test Methods for Common Properties of Certain
3
4. Sampling
Pigments
D 1845 Test Methods for Chemical Analysis of Strontium
4.1 Two samples shall be taken at random from different
3
Chromate Pigment
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 Dry Pigment—The pigment shall be commercially pure
from different packages in the ratio of two samples for each
strontium chromate-free of extenders and organic material,
4540 kg or 10 000 lb, except that for shipments of less than
except for materials introduced to improve those properties for
10 000 lb, two samples shall be taken. At the option of the
which the pigment is used. The pigment shall conform to the
purchaser, the samples may be tested separately or after
following requirements:
blending in equal
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