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ASTM D763-06

(Specification)

Standard Specification for Raw and Burnt Umber Pigments

Standard Specification for Raw and Burnt Umber Pigments

ABSTRACT
This specification covers raw and burnt umber pigments. The pigments could be in a dry or paste in oil form. Dry pigments should conform to the composition requirements for iron oxide content, calcium compound content, moisture and other volatile matter content, coarse particle content, and organic color content. Raw umber dry pigments should be in a soft, dry form and made from a hydrated iron oxide permeating a siliceous base and free of admixtures. Burnt umber dry pigments should be produced by raw amber calcination and free of admixtures. Paste in oil pigments should conform to the specified pigment content, nonvolatile vehicle content, moisture by distillation content, and coarse particle and skin content. Both raw and burnt umber paste in oil pigments should be made by thoroughly grinding the pigment with linseed oil with a small amount of wetting or dispersing agents.
SCOPE
1.1 This specification covers the pigments commercially known as raw umber and burnt umber.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

Status
Historical
Publication Date
31-Oct-2006
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 D763-01 - Standard Specification for Raw and Burnt Umber Pigments
Effective Date
01-Nov-2006
Replaced By
ASTM D763-06(2012) - Standard Specification for Raw and Burnt Umber Pigments
Effective Date
01-Jun-2012
Referred By
ASTM F2207-06(2023) - Standard Specification for Cured-in-Place Pipe Lining System for Rehabilitation of Metallic Gas Pipe
Effective Date
01-Nov-2006

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ASTM D763-06 - Standard Specification for Raw and Burnt Umber PigmentsASTM D763-06 - Standard Specification for Raw and Burnt Umber Pigments
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ASTM D763-06 - Standard Specification for Raw and Burnt Umber Pigments
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D763 −06
StandardSpecification for
1
Raw and Burnt Umber Pigments
This standard is issued under the fixed designation D763; 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 PasteinOil—Forbothrawandburntumber,thepastein
oil shall be made by thoroughly grinding the pigment with
1.1 This specification covers the pigments commercially
linseed oil (with or without a small amount of volatile thinner)
known as raw umber and burnt umber.
together with (where necessary) small amounts of wetting or
1.2 The values stated in SI units are to be regarded as the
dispersing agents to produce a paste or semipaste of satisfac-
standard. The values given in parentheses are for information
tory consistency. As received, it shall not be caked in the
only.
container and shall break up readily in linseed oil to form a
smooth paint of brushing consistency. It shall mix readily in all
2. Referenced Documents
proportions, without curdling, with linseed oil, turpentine, or
2
2.1 ASTM Standards:
volatile petroleum spirits, or any mixture of these substances.
D50 Test Methods for ChemicalAnalysis ofYellow, Orange,
The paste shall conform to the following requirements:
Red, and Brown Pigments Containing Iron and Manga-
Pigment, min, % 55
nese
Nonvolatile vehicle, min, % 80
Moisture by distillation, max, % 2.0
D185 Test Methods for Coarse Particles in Pigments
Coarse particles and skins (total residue retained on a 1.0
D280 Test Methods for Hygroscopic Moisture (and Other
No. 325 (45-µm sieve), max, % of dry pigment
Matter Volatile Under the Test Conditions) in Pigments
3.3 The mass color and character of the tint and the tinting
D387 Test Method for Color and Strength of Chromatic
strength formed by a mixture with a white pigment shall be
Pigments with a Mechanical Muller
within mutually agreed upon limits of a standard acceptable to
D1208 Test Methods for Common Properties of Certain
both the purchaser and the seller.
Pigments
4. Sampling
3. Composition and Properties
4.1 Two samples shall be taken at random from different
3.1 Dry Pigments—The pigments shall conform to the
packages from each lot, batch, day’s pack, or other unit of
following requirements:
production in a shipment. When no markings distinguishing
3.1.1 Raw Umber—The pigment shall be in a soft, dry form
between units of production appear, samples shall be taken
and shall be a hydrated oxide of iron (together with such
from different packages in the ratio of two samples for each
manganese that is naturally associated with it) permeating a
4540 kg or 10 000 lb, except that for shipments of less than
siliceous base and shall be free of admixtures of other
10 000 lb, two samples shall be taken. At the option of the
substancesexceptcarbonpigments.Thepigmentshallconform
purchaser, the samples may be tested separately or after
to the requirements for composition prescribed in Table 1.
blending in equal quantities the samples from the same
3.1.2 Burnt Umber—The pigment shall be produced by the
production unit to form a composite sample.
calc
...

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