ASTM D769-01(2007)
(Specification)Standard Specification for Black Synthetic Iron Oxide
Standard Specification for Black Synthetic Iron Oxide
ABSTRACT
This specification details the properties and requirements for the pigment commercially known as black synthetic iron oxide, which is manufactured ferrous-ferric oxide obtained by chemical reaction. It shall be a soft dry finely powdered pigment, free of admixtures of other substances. Specimens shall be sampled, chemically tested, and conform accordingly to specified values of the following requirements: total iron oxides (as ferrous and ferric oxide); ferrous iron in iron oxide; water-soluble matter; moisture and other volatile matter; coarse particles (total residue retained on a No. 325 sieve); hydrogen ion concentration (pH value); and mass color, tint character, and tinting strength.
SCOPE
1.1 This specification covers the pigment commercially known as black synthetic iron oxide.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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Designation:D769 −01(Reapproved2007)
StandardSpecification for
Black Synthetic Iron Oxide
This standard is issued under the fixed designation D769; 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
Total ferrous and ferric oxide, min % 93
Ferrous oxide (FeO), min, % 20
1.1 This specification covers the pigment commercially Water-soluble matter, max, % 0.5
Moisture and other volatile matter, max, % 1.0
known as black synthetic iron oxide.
Coarse particles (total residue retained on a No. 0.5
325 (45-µm) sieve), max, %
1.2 The values stated in SI units are to be regarded as the
Hydrogen ion concentration (pH value) 4.5 to 8.5
standard. The values given in parentheses are for information
3.2 The mass color and character of the tint and the tinting
only.
strength formed by a mixture with a white pigment shall be
within mutually agreed upon limits of a standard acceptable to
2. Referenced Documents
both the purchaser and the seller.
2.1 ASTM Standards:
4. Sampling
D50 Test Methods for ChemicalAnalysis ofYellow, Orange,
Red, and Brown Pigments Containing Iron and Manga-
4.1 Two samples shall be taken at random from different
nese
packages from each lot, batch, day’s pack, or other unit of
D185 Test Methods for Coarse Particles in Pigments production in a shipment. When no markings distinguishing
D280 Test Methods for Hygroscopic Moisture (and Other 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
D387 Test Method for Color and Strength of Chromatic 4540 kg or 10 000 lb, except that for shipments of less than 10
000 lb, two samples shall be taken. At the option of the
Pigments with a Mechanical Muller
purchaser, the samples may be tested separately or after
D1208 Test Methods for Common Properties of Certain
blending in equal quantities the samples from the same
Pigments
production unit to form a composite sample.
D3872 Test Method for Ferrous Iron in Iron Oxides
5. Test Methods
3. Composition and Properties
5.1 Tests shall be conducted in accordance with the appro-
3.1 The pigment shall be a manufactured ferrous-ferric
priate test methods. Test procedures not covered byASTM test
oxideobtainedbychemicalreaction.Itshallbeasoftdryfinely
methods shall be mutually agreed upon between the purchaser
powdered pigment, free of admixtures of other substances and
and the seller.
shall conform to the following requirements:
5.1.1 Total Iron Oxides—Test Methods D50.
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
e1
Designation:D769–87(Reapproved 1995) Designation: D 769 – 01 (Reapproved 2007)
Standard Specification for
Black Synthetic Iron Oxide
This standard is issued under the fixed designation D 769; 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.
e NOTE—Additional keywords were added editorially in May 1995.
1. Scope
1.1 This specification covers the pigment commercially known as black synthetic iron oxide.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
2. Referenced Documents
2.1 ASTM Standards:
D 50 Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese
D 185Test Methods for Coarse Particles in Pigments, Pastes, and Paints Test Methods for Coarse Particles in Pigments
D 280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
D 387 Test Method for Color and Strength of ColorChromatic Pigments with a Mechanical Muller
D 1208 Test Methods for Common Properties of Certain Pigments
D 3872 Test Method for Ferrous Iron in Iron Oxides
3. Composition and Properties
3.1 The pigment shall be a manufactured ferrous-ferric oxide obtained by chemical reaction. It shall be a soft dry finely
powdered pigment, free of admixtures of other substances and shall conform to the following requirements:
Total ferrous and ferric oxide, min % 93
Ferrous oxide (FeO), min, % 20
Water-soluble matter, max, % 0.5
Moisture and other volatile matter, max, % 1.0
Coarse particles (total residue retained on a No. 0.5
325 (45-µm) sieve), max, %
Hydrogen ion concentration (pH value) 4.5 to 8.5
3.2 The mass color and character of the tint and the tinting strength formed by a mixture with a white pigment shall be within
mutually agreed upon limits of a standard acceptable to both the purchaser and the seller.
4. Sampling
4.1 Two samples shall be taken at random from different packages from each lot, batch, day’s pack, or other unit of production
in a shipment. When no markings distinguishing between units of production appear, samples shall be taken from different
packages in the ratio of two samples for each 5 tons (inch-pound 4540 kg or SI), 10 000 lb, except that for shipments of less than
10000 lb10 000 lb, two samples shall be taken. At the option of the purchaser, the samples may be tested separately or after
blending in e
...
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