ASTM D4462-02(2012)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D4462 −02 (Reapproved 2012)
Standard Specification for
Zinc Hydroxy Phosphite Pigment
This standard is issued under the fixed designation D4462; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope agreed upon limits of a reference sample acceptable by the
purchaser and the seller as tested in an agreed test procedure.
1.1 This specification covers a zinc hydroxy phosphite
pigment having the general formula
4. Sampling
ZnHPO ·[ZnO·2Zn(OH) ].
3 2
4.1 Two samples shall be taken at random from different
packages from each lot, batch, day’s pack, or other unit of
2. Referenced Documents
production in a shipment. When no markings distinguishing
2.1 ASTM Standards:
between units of production appear, samples shall be taken
D185 Test Methods for Coarse Particles in Pigments
from different packages, in the ratio of two samples for each
D280 Test Methods for Hygroscopic Moisture (and Other
10 000 lb (4545 kg), except that for shipments of less than
Matter Volatile Under the Test Conditions) in Pigments
10 000 lb two samples shall be taken. At the option of the
D281 Test Method for Oil Absorption of Pigments by
purchaser, the samples may be tested separately or after
Spatula Rub-out
blending in equal quantities the samples from the same
D4450 Test Method forAnalysis of Zinc Hydroxy Phosphite
production unit to form a composite sample.
Pigment
5. Test Methods
3. Composition and Properties 5.1 Tests shall be conducted in accordance with the follow-
ingASTMtestmethods.TestproceduresnotcoveredbyASTM
3.1 The pigment shall consist of zinc hydroxy phosphite and
test methods shall be mutually agreed upon between the
shall conform to the requirements in Table 1.
purchaser and the seller.
3.2 The mass color of the dry pigment is white. The shade
5.2 Chemical Analysis—Test Method D4450.
and tinting strength, when specified, shall be within mutually
5.3 Moisture Loss—Determine the hygroscopic moisture
loss by Method A of Test Methods D280.
5.4 Oil Absorption—Test Method D281.
This specification is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
5.5 Sieve Residue—Determine the residue on a
...