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ASTM D4462-02

(Specification)

Standard Specification for Zinc Hydroxy Phosphite Pigment

Standard Specification for Zinc Hydroxy Phosphite Pigment

SCOPE
1.1 This specification covers a zinc hydroxy phosphite pigment having the general formula ZnHPO3[ZnO2Zn(OH) 2].

General Information

Status
Historical
Publication Date
09-Jul-2002
ICS
87.060.10 - Pigments and extenders
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.31 - Pigment Specifications
Current Stage
Ref Project

Relations

Replaces
ASTM D4462-85(1996)e1 - Standard Specification for Zinc Hydroxy Phosphite Pigment
Effective Date
10-Jul-2002
Replaced By
ASTM D4462-02(2007) - Standard Specification for Zinc Hydroxy Phosphite Pigment
Effective Date
01-Nov-2007

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ASTM D4462-02 - Standard Specification for Zinc Hydroxy Phosphite PigmentASTM D4462-02 - Standard Specification for Zinc Hydroxy Phosphite Pigment
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ASTM D4462-02 - Standard Specification for Zinc Hydroxy Phosphite Pigment
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 4462 – 02
Standard Specification for
1
Zinc Hydroxy Phosphite Pigment
This standard is issued under the fixed designation D 4462; 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.
TABLE 1 Requirements for Zinc Hydroxy Phosphite Pigment
1. Scope
Min Max
1.1 This specification covers a zinc hydroxy phosphite
Zinc (as ZnO), % 74.7 79.7
pigment having the general formula
Phosphorus (as H PO ), % 18.5 20.1
3 3
ZnHPO ·[ZnO·2Zn(OH) ].
3 2
Moisture, % . 1.25
Oil absorption, lb/100 lb pigment, % 15 22
2. Referenced Documents
Residue, No. 325 sieve, % . 1.0
2.1 ASTM Standards:
D 185 Test Methods for Coarse Particles in Pigments,
2
Pastes, and Paints
production in a shipment. When no markings distinguishing
D 280 Test Methods for Hygroscopic Moisture (and Other
2
between units of production appear, samples shall be taken
Matter Volatile Under the Test Conditions) in Pigments
from different packages, in the ratio of two samples for each
D 281 Test Method for Oil Absorption of Pigments by
3
10 000 lb (4545 kg), except that for shipments of less than
Spatula Rub-Out
10 000 lb two samples shall be taken. At the option of the
D 4450 Test Method for Analysis of Zinc Hydroxy Phos-
2
purchaser, the samples may be tested separately or after
phite Pigment
blending in equal quantities the samples from the same
3. Composition and Properties
production unit to form a composite sample.
3.1 The pigment shall consist of zinc hydroxy phosphite and
5. Test Methods
shall conform to the requirements in Table 1.
5.1 Tests shall be conducted in accordance with the follow-
3.2 The mass color of the dry pigment is white. The shade
ingASTMtestmethods.TestproceduresnotcoveredbyASTM
and tinting strength, when specified, shall be within mutually
test methods shall be mutually agreed upon between the
agreed upon limits of a reference sample acceptable by the
purchaser and the seller.
purchaser and the seller as tested in an agreed test procedure.
5.2 Chemical Analysis—Test Method D 4450.
4. Sampling
5.3 Moisture Loss—Determ
...

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