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ASTM

ASTM D3722-05(2011)

(Specification)

Standard Specification for Natural Red and Brown Iron Oxide Pigments

Standard Specification for Natural Red and Brown Iron Oxide Pigments

ABSTRACT
This specification covers red and brown pigments of dry and wet ground natural iron oxide, dry and wet ground calcined natural iron oxide, and mixtures of these with synthetic iron oxides. These pigments are suitable for such applications as paints and coatings. Specimens shall be sampled and suitably undergo chemical analysis for total iron oxide, sulfur as sulfates, organic coloring matter, matter soluble in water, coarse particles in dry pigment, and moisture and other volatile matter. The pigments shall also conform to specified mass color, tint character, and tinting strength as mutually agreed upon between purchaser and seller.
SCOPE
1.1 This specification covers dry and wet ground naturally occurring iron oxide, dry and wet ground calcined naturally occurring iron oxide, and mixtures of these with synthetic iron oxides. These pigments are suitable for use in paints, coatings, and many other applications.

General Information

Status
Historical
Publication Date
31-May-2011
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 D3722-05 - Standard Specification for Natural Red and Brown Iron Oxide Pigments
Effective Date
01-Jun-2011
Replaced By
ASTM D3722-05(2019) - Standard Specification for Natural Red and Brown Iron Oxide Pigments
Effective Date
01-May-2019

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ASTM D3722-05(2011) - Standard Specification for Natural Red and Brown Iron Oxide PigmentsASTM D3722-05(2011) - Standard Specification for Natural Red and Brown Iron Oxide Pigments
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ASTM D3722-05(2011) - Standard Specification for Natural Red and Brown Iron Oxide Pigments
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D3722 −05(Reapproved 2011)
Standard Specification for
Natural Red and Brown Iron Oxide Pigments
This standard is issued under the fixed designation D3722; 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 3.2 The mass color and character of the tint and the tinting
strength formed by a mixture with a white pigment shall be
1.1 This specification covers dry and wet ground naturally
within mutually agreed upon limits of a standard acceptable to
occurring iron oxide, dry and wet ground calcined naturally
both the purchaser and the seller.
occurring iron oxide, and mixtures of these with synthetic iron
oxides. These pigments are suitable for use in paints, coatings,
4. Sampling
and many other applications.
4.1 Two samples shall be taken at random from different
2. Referenced Documents
packages from each lot, batch, day’s pack, or other unit of
2.1 ASTM Standards:
production in a shipment. When no markings distinguishing
D50 Test Methods for ChemicalAnalysis ofYellow, Orange,
between units of production appear samples shall be taken
Red, and Brown Pigments Containing Iron and Manga-
from different packages in the ratio of two samples for each 5
nese
tons (inch-pound or SI), except that for shipments of less than
D185 Test Methods for Coarse Particles in Pigments
10 000 lb two samples shall be taken. At the option of the
D280 Test Methods for Hygroscopic Moisture (and Other
purchaser, the samples may be tested separately, or after
Matter Volatile Under the Test Conditions) in Pigments
blending in equal quantities the samples from the same
D1208 Test Methods for Common Properties of Certain
production unit to form a composite sample.
Pigments
3. Composition and Properties
5. Test Methods
3.1 The pigments shall conform to the following require-
5.1 Tests shall be conducted in accordance with the appro-
ments:
priate ASTM test methods. Test procedures not covered by
Total iron as Fe O , min, % 40.0
2 3
ASTMtestmethodsshallbemutuallyagreeduponbetweenthe
Moisture and other volatile matter, max, % 1.0
purchaser and the seller.
Organic coloring matter none
Total sulfates expressed as SO , max, % 2.0
5.1.1 Total Iron Oxide, Sulfur, and Organic Coloring
Matter soluble in water, max, % 2.0
Matter soluble
...

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ASTM  
Method  
Refer-  
Dry Pigments
Sections  
ences  
Moisture and Other Volatile Matter  
6  
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Loss on Ignition  
7  
Coarse Particles  
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9  
D1208  
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D562  
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