ASTM D765-87(1999)

Standard Specification for Raw and Burnt Sienna Pigments

SCOPE
1.1 This specification covers the pigments commercially known as raw sienna and burnt sienna.

General Information

• Status: Historical
• Publication Date: 09-Jul-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 D765-87(2003) - Standard Specification for Raw and Burnt Sienna Pigments
• Effective Date: 01-Oct-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 765 – 87 (Reapproved 1999)
Standard Specification for
Raw and Burnt Sienna Pigments
This standard is issued under the fixed designation D 765; 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.
TABLE 1 Requirements for Composition of Raw and Burnt
1. Scope
Sienna
1.1 This specification covers the pigments commercially
Raw Burnt
known as raw sienna and burnt sienna.
Sienna Sienna
Iron oxide (Fe O ), min, % 38 40
2 2
2. Referenced Documents
Calcium compounds (as CaO) max, % 5.0 5.0
2.1 ASTM Standards: Moisture and other volatile matter, max, % 4.0 4.0
Coarse particles (total residue retained on a No. 325 2.0 2.0
D 50 Test Methods for Chemical Analysis of Yellow, Or-
(45-μm) sieve), max, %
ange, Red, and Brown Pigments Containing Iron and
Organic colors, max, % none none
Manganese
D 185 Test Methods for Coarse Particles in Pigments,
Pastes, and Paints
Pigment, min, % 60
D 280 Test Methods of Hygroscopic Moisture (and Other
Nonvolatile vehicle, min, of vehicle 80
Moisture by distillation, max, % 2.0
Matter Volatile Under the Test Conditions) in Pigments
Coarse particles and skins (total residue retained on a No. 325 (45-μm) 1.0
D 387 Test Method for Color and Strength of Color Pig-
sieve), max, % of dry pigment
ments with a Mechanical Muller
3.3 The mass color and character of the tint and the tinting
D 1208 Test Methods for Common Properties of Certain
3 strength formed by a mixture with a white pigment shall be
Pigments
within mutually agreed upon limits of a standard acceptable to
3. Composition and Properties both the purchaser and the seller.
3.1 Dry Pigments—The pigments shall conform to the
4. Sampling
following requirements:
4.1 Two samples shall be taken at random from different
3.1.1 Raw Sienna—The pigment shall be in a soft, dry form
packages from each lot, batch, day’s pack, or other unit of
and shall be a hydrated oxide of iron permeating a siliceous
production in a shipment. When no markings distinguishing
base. The pigment shall conform to the requirements for
between units of production appear, samples shall be taken
composition prescribed in Table 1.
from different packages in the ratio of two samples for each 5
3.1.2 Burnt Sienna—The pigment shall be produced by the
tons (inch-pound or SI), except that for shipments of less than
calcination of raw sienna and shall conform to the requirements
10 000 lb two samples shall be taken. At the option of the
for composition prescribed in Table 1.
purchaser, the samples may be tested separately or after
3.2 Paste in Oil—For both raw and burnt sienna, the paste
blending in equal quantities the samples from the same
in oil shall be made by thoroughly grinding the pigment with
production unit to form a composite sample.
linseed oil (with or without a small amount of volatile thinner)
together with (where necessary) small amounts of wetting or
5. Test
...