Standard Specification for Red Lead Pigment

SCOPE
1.1 This specification covers four grades of red pigment commercially known as red lead. The pigment may be purchased in the dry form or as a paste in oil.

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Historical
Publication Date
31-Dec-1995
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Technical specification
ASTM D83-84(1996)e1 - Standard Specification for Red Lead Pigment
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e1
Designation: D 83 – 84 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Red Lead Pigment
This standard is issued under the fixed designation D 83; 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—Keywords were added editorially in May 1996.
1. Scope paste as shipped by the seller, and for three months thereafter,
shall not be caked in the container, and shall break up readily
1.1 This specification covers four grades of red pigment
in oil to form a smooth paint of brushing consistency. The paste
commercially known as red lead. The pigment may be pur-
shall conform to the following requirements:
chased in the dry form or as a paste in oil.
Pigment, % 92 to 94
Linseed oil, % 6.0 to 8.0
2. Referenced Documents
Moisture and other volatile matter, max, % 0.5
2.1 ASTM Standards:
Coarse particles and skins (total residue retained on 1.5
a No. 325 (45-μm) sieve), max, % of the dry pigment
D 49 Test Methods for Chemical Analysis of Red Lead
D 185 Test Methods for Coarse Particles in Pigments,
When mixed as indicated in the following table, the resulting
Pastes, and Paints
paint, brushed on a smooth, vertical iron surface, shall dry hard
D 1208 Test Methods for Common Properties of Certain
and elastic without running, streaking, or sagging:
Pigments
Red lead paste 20 lb (9.1 kg)
Raw linseed oil 3 pt (1.4 L)
3. Composition and Properties
Turpentine 2 gills (0.24 L)
Liquid drier 2 gills (0.24 L)
3.1 Dry Pigment—The pigment shall be made by roasting
NOTE 1—The storage of paste red lead in places of high temperature
litharge or metallic lead, or compounds of lead that yield
should be avoided, as heat accelerates the tendency of this material to cake
litharge by heating, and shall consist entirely of oxides of lead,
or harden. Purchasers are cautioned that 85 % grade red lead should not be
free of adulterants. The four grades of pigment shall conform
bought in paste form. The 95 % grade, if made into paste, should be used
to the following requirements:
within a short period of time after grinding. When pure red lead paste is
True red lead (Pb O ), min, %:
3 4 to be stored for a considerable period of time, the 97 % or 98 % grade of
85 % grade 85
red lead should be specified. Therefore the manufacturer shall identify the
95 % grade 95
grade of red lead used in the paste and the date of manufacture.
97 % grade 97
98 % grade 98
4. Sampling
Total impurities including moisture, water soluble 1.0
matter, and matter insoluble in a mixture of
4.1 Two samples shall be taken at random from different
nitric acid and hydrogen peroxide, max, %
packages fr
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