Standard Specification for Red Lead Pigment

ABSTRACT
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. Chemical analysis and coarse particle shall be tested to meet the requirements prescribed. Pigment, linseed oil, and moisture and other volatile matter in paste in oil shall be tested to meet the requirements prescribed.
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.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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Publication Date
30-Jun-2008
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Technical specification
ASTM D83-84(2008)e1 - Standard Specification for Red Lead Pigment
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation:D83 −84(Reapproved 2008)
Standard Specification for
Red Lead Pigment
This standard is issued under the fixed designation D83; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—The units statement in subsection 1.2 was corrected editorially in July 2008.
1. Scope Whenmixedasindicatedinthefollowingtable,theresulting
paint, brushed on a smooth vertical iron surface, shall dry hard
1.1 This specification covers four grades of red pigment
and elastic without running, streaking, or sagging:
commercially known as red lead. The pigment may be pur-
Dry red lead 20 lb (9.1 kg)
chased in the dry form or as a paste in oil.
Raw linseed oil 5 pt (2.4 L)
1.2 The values stated in inch-pound units are to be regarded Turpentine 2 gills (0.24 L)
Liquid drier 2 gills (0.24 L)
as standard. The values given in parentheses are mathematical
3.2 Paste in Oil—The paste shall be made by thoroughly
conversions to SI units that are provided for information only
grinding the specified pigment with linseed oil (Note 1). The
and are not considered standard.
paste as shipped by the seller, and for three months thereafter,
shall not be caked in the container, and shall break up readily
2. Referenced Documents
2 inoiltoformasmoothpaintofbrushingconsistency.Thepaste
2.1 ASTM Standards:
shall conform to the following requirements:
D49 Test Methods of Chemical Analysis of Red Lead
Pigment, % 92 to 94
D185 Test Methods for Coarse Particles in Pigments
Linseed oil, % 6.0 to 8.0
D1208 Test Methods for Common Properties of Certain
Moisture and other volatile matter, max, % 0.5
Coarse particles and skins (total residue retained on 1.5
Pigments
a No. 325 (45-µm) sieve), max, % of the dry pigment
Whenmixedasindicatedinthefollowingtable,theresulting
3. Composition and Properties
paint, brushed on a smooth, vertical iron surface, shall dry hard
3.1 Dry Pigment—The pigment shall be made by roasting
and elastic without running, streaking, or sagging:
litharge or metallic lead, or compounds of lead that yield
Red lead paste 20 lb (9.1 kg)
litharge by heating, and shall consist entirely of oxides of lead,
Raw linseed oil 3 pt (1.4 L)
free of adulterants. The four grades of pigment shall conform
Turpentine 2 gills (0.24 L)
Liquid drier 2 gills (0.24 L)
to the following requirements:
True red lead (Pb O ), min, %: NOTE 1—The storage of paste red lead in places of high temperature
3 4
85 % grade 85
shouldbeavoided,asheatacceleratesthetendencyofthismaterialtocake
95 % grade 95
or harden. Purchasers are cautioned that 85 % grade red lead should not be
97 % grade 97
bought in paste form. The 95 % grade, if made into paste, should be used
98 % grade 98
within a short period of time after grinding. When pure red lead paste is
Total impurities including moisture, water soluble 1.0
to be stored for a considerable period of time, the 97 % or 98 % grade of
matter, and matter insoluble in a mixture of
red lead should be specified. Therefore the manufacturer shall identify the
nitric acid and hydrogen peroxide, max, %
grade of red lead used in the past
...

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