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APPROVED AS AMERICAN STANDARD BY THE AMERICAN STANDARDS ASSOCIATION ASA NO.: K3!-1947 Standard Specifications for REDUCED PARA RED 1 A.S.T.lVI Designation: D 264- 47 ADOPTED 1928: REVISED 1939, 1940 1941 1947 2 II, p 146 (D 264- 47) Standard Specifications D 264- 47 were withdrawn June, 1948 Scope (b) Paste in Oit.-The paste in oil 1 These specifications cover the red shall be a dispersion of the specified pigment commercially known as reduced para red The pigment may be pur- pigment in linseed oil' As received it chased in the dry form or as a paste in oil shall not be caked in the container and Composition and Properties shall break up readily in oil to form a 2 (a) Dry Pigment.-The pigment smooth paint of brushing consistency shall consist of a mixture of para-nitra·nil- ine toner and substrate, made either by It shall mix readily in all proportions, precipitating the toner on the substrate or by mixing slurries Unless other- without curdling, with linseed oil, tur- wise specified by the purchaser, the substrate shall be calcium carbonate pentine, or volatile petroleum spirits, The pigment shall conform to the fol- lowing requirements: or any mixture of these substances Pure organic coloring matter (para red), The paste shall conform to the follow- min., per cent 15 ing requirements: ' Calcium carbonate, max., per cent 85 Moisture and other volatile matter, max., Pigment, min., per cent 74 Linseed oil, max., per cent 26 per cent 1.0 Moisture and other volatile matter, max., 0 7 Coarse particles (total residue retained on per cent 2 0 a No 325 (44-micron) sieve), max., per Coarse particles and skins (total residue cent 1.5 retained on a No 325 (44-micron) sieve), 1 Under the standardization procedure of the Society, max., per cent of the dry pigment these specifications are under the jurisdiction of the A.S.T.M Committee D-1 on Paint, Varnish, Lacquer, (c) The mass color and character of and Related Products the tint formed by mixture with a white pigment shall be the same as, and the 1 Prior to adoption as standard, these specifications strength not less than, that of a refer- were published as tentative from 1927 to 1928, being re- ence sample mutually agreed upon by visecf in 1928 the purchaser and the seller Number of Tests 3 Two samples shall be taken at random from different packages from 146 SPECIJ?ICATIONS FOR REDUCED PARA RED (D 264 - 47) 147 each lot, batch, clay's pack, or other unit samples from the same production unit of production in a shipment When no to form a composite sample markings distinguishing between units of production appear, samples shall be Methods of Testing taken from different packages in the ratio of two samples for each 10,000 lb., 4 Tests shall be conducted in ac- except that for shipments of less than cordance with the appropriate methods 10,000 lb two samples shall he taken of the American Society for Testing At the option of the purchaser, the Materials, where applicable Test pro- samples may be tested separately or cedures not covered by A.S.T.M meth- after blending in equal quantities the ods shall be mutually agreed upon by the purchaser and the seller