ASTM D3721-83(1999)

Standard Specification for Synthetic Red Iron Oxide Pigment

SCOPE
1.1 This specification covers synthetic red iron oxide for use in paints and coatings manufactured by any of the following:  
1.1.1 Calcination of iron salts.  
1.1.2 Precipitation from iron salts.  
1.1.3 Calcination of synthetic iron oxide.  
1.1.4 Product of organic reduction.

General Information

• Status: Historical
• Publication Date: 09-May-1999
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Relations

• Replaced By: ASTM D3721-05 - Standard Specification for Synthetic Red Iron Oxide Pigment
• Effective Date: 01-Sep-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 3721 – 83 (Reapproved 1999)
Standard Specification for
Synthetic Red Iron Oxide Pigment
This standard is issued under the fixed designation D 3721; 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.
1. Scope 3.2 Inasmuchasironoxidepigmentsareavailableinarange
of colors, the mass color and, if desired by the purchaser, the
1.1 Thisspecificationcoverssyntheticredironoxideforuse
character of the tint formed by mixture with a white pigment
in paints and coatings manufactured by any of the following:
shall be within mutually agreed upon limits of a reference
1.1.1 Calcination of iron salts.
sample mutually agreed upon between the seller and the
1.1.2 Precipitation from iron salts.
purchaser. This sample should be tested in accordance with
1.1.3 Calcination of synthetic iron oxide.
Test Method D 387.
1.1.4 Product of organic reduction.
4. Sampling
2. Referenced Documents
4.1 Two samples shall be taken at random from different
2.1 ASTM Standards:
packages from each lot, batch, day’s pack, or other unit of
D 50 Test Methods for Chemical Analysis of Yellow, Or-
production in a shipment. When no markings distinguishing
ange, Red, and Brown Pigments Containing Iron and
between units of production appear samples shall be taken
Manganese
from different packages in the ratio of two samples for each
D 185 Test Methods for Coarse Particles in Pigments,
10 000 lb (5000 kg), except that for shipments of less than
Pastes, and Paints
10 000 lb two samples shall be taken. At the option of the
D 280 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
D 387 Test Method for Color and Strength of Color Pig-
production unit to form a composite sample.
ments with a Mechanical Muller
D 1208 Test Methods for Common Properties of Certain
5. Test Methods
Pigments
5.1 Tests shall be conducted in accordance with the follow-
3. Composition and Properties ingASTMtestmethods.Testprocedur
...