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ASTM D85-05(2011)

(Specification)

Standard Specification for Ochre Pigment

Standard Specification for Ochre Pigment

ABSTRACT
This specification covers ferrous earthy pigment included under the general term “ochre.” The pigment shall be a hydrated oxide of iron permeating a siliceous base and shall be free from added impurities and added coloring matter. The following test methods shall be conducted: chemical analysis of dry pigment; coarse particles; mass color and tinting strength; volatile matter; and moisture. The results of these test methods should conform to the pigment requirements.
SCOPE
1.1 This specification covers ferrous earthy pigment included under the general term “ochre.” The pigment may be purchased in the dry form.

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 D85-05 - Standard Specification for Ochre Pigment
Effective Date
01-Jun-2011

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ASTM D85-05(2011) - Standard Specification for Ochre PigmentASTM D85-05(2011) - Standard Specification for Ochre Pigment
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ASTM D85-05(2011) - Standard Specification for Ochre Pigment
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D85 −05 (Reapproved 2011)
Standard Specification for
Ochre Pigment
This standard is issued under the fixed designation D85; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
Ferric oxide, min, % 17
Calcium oxide, max, % 5
1.1 This specification covers ferrous earthy pigment in- Lead chromate none
Organic coloring matter none
cluded under the general term “ochre.” The pigment may be
Moisture and other volatile matter, max, % 1.0
purchased in the dry form.
Coarse particles (total residue retained on a No. 325 1.0
(45-µm) sieve), max, %
2. Referenced Documents 3.2 The mass color and character of the tint and the tinting
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
D50 Test Methods for ChemicalAnalysis ofYellow, Orange,
both the purchaser and the seller.
Red, and Brown Pigments Containing Iron and Manga-
4. Sampling
nese
D185 Test Methods for Coarse Particles in Pigments
4.1 Two samples shall be taken at random from different
D280 Test Methods for Hygroscopic Moisture (and Other packages from each lot, batch, day’s pack, or other unit of
Matter Volatile Under the Test Conditions) in Pigments production in a shipment. When no markings distinguishing
between units of production appear, samples shall be taken
D387 Test Method for Color and Strength of Chromatic
from different packages in the ratio of two samples for each 5
Pigments with a Mechanical Muller
tons (inch-pound or SI), except that for shipments of less than
D1208 Test Methods for Common Properties of Certain
10 000 lb two samples shall be taken. At the option of the
Pigments
purchaser, the samples may be tested separately or after
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 be a hydrated oxide of iron permeat-
5. Test Methods
ing a siliceous base and shall be free from added impurities and
added coloring matter. The pigment shall conform to the 5.1 Tests shall be conducted in accordance with the appro-
priate ASTM test methods. Test procedures not covered by
following requirements:
ASTM methods shall be mutually agreed upon between the
purchaser
...

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ASTM  
Method  
Refer-  
Dry Pigments
Sections  
ences  
Moisture and Other Volatile Matter  
6  
D280  
Loss on Ignition  
7  
Coarse Particles  
8  
D185  
Matter Soluble in Water  
9  
D1208  
Organic Coloring Matter  
10  
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Calcium Compounds (Reported as CaO)  
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Calcium Carbonate (in Venetian Red)  
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19 and 20  
Pigment Pastes in Oil  
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D1208  
Moisture and Other Volatile Matter  
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Consistency (Stormer)  
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D562  
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