Specification for Pure Para Red Toner (Withdrawn 1948)

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Technical specification
ASTM D264-47 - Specification for Pure Para Red Toner (Withdrawn 1948)
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APPROVED AS
AMERICAN STANDARD
BY THE AMERICAN STANDARDS ASSOCIATION
ASA NO.: K3!-1947
Standard .Specifications for
1
REDUCED PARA RED
A.S.T.lVI. Designation: D 264- 47
2
ADOPTED . 1928: REVISED. 1939, 1940. 1941. 1947.
II, p. 146 (D 264- 47).
Standard Specifications D 264- 47 were withdrawn June, 1948.
Scope (b) Paste in Oit.-The paste in oil
shall be a dispersion of the specified
1. These specifications cover the red
pigment in linseed oil'. As received it
pigment commercially known as reduced
shall not be caked in the container and
para red. The pigment may be pur­
shall break up readily in oil to form a
chased in the dry form or as a paste in
smooth paint of brushing consistency.
oil.
It shall mix readily in all proportions,
Composition and Properties without curdling, with linseed oil, tur­
pentine, or volatile petroleum spirits,
2. (a) Dry Pigment.-The pigment
or any mixture of these substances.
shall consist of a mixture of para-nitra·nil­
The paste shall conform to the follow-
ine toner and substrate, made either by
ing requirements: '
precipitating the toner on the substrate
or by mixing slurries. Unless other­
Pigment, min., per cent . 74
Linseed oil, max., per cent. . 26
wise specified by the purchaser, the
Moisture and other volatile matter, max.,
substrate shall be calcium carbonate.
per cent. 0. 7
The pigment shall conform to the fol­ Coarse particles and skins (total residue
retained on a No. 325 (44-micron) sieve),
lowing requirements:
max., per cent of the dry pigment. . . . . 2 .0
Pure organic coloring matter (para red),
min., per cent. . 15
(c) The mass color and character of
Calcium carbonate, max., per cent .
...

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