ASTM D768-01 pdf free

04-08-2021 comment

ASTM D768-01 pdf free.Standard Specification for Yellow lron Oxide Hydrated.
1.1 This specification covers the pigment commercially known as yellow iron oxide, hydrated.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
2. Referenced Documents.ASTM Standards:
D 50 Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese
D185 Test Methods for Coarse Particles in Pigments,Pastes, and Paints
D 280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
D 1208 Test Methods for Common Properties of Certain Pigments
A Total hydrated axide of iron shall be the sum of iron axide and loss on ignitin.Loss on ignition shall be aloulated on the dry material.
3.2 Paste in Oil- The paste in oil shall be made by thoroughly grinding the specifed pigment with linseed oil (with or without a small amount of volatile thinner) together with (where necessary) small amounts of wetting or dispersing agents to a semipaste or fuid type consistency. As received, it shall not be caked in the container and shall break up readily in oil to form a smooth paint of brushing consistency. It shall mix readily in all porportions, without curdling. with linseed oil,tupentine, or volatile petroleum spirits, or any mixtures of these substances.
3.3 The mass color character of the tint and the tinting strength formed by a mixture with a white pigment shall be within mutually agreed upon limits of a standard aceptable to both the purchaser and the seller.
4. Sampling.Two samples shall be taken at random from different packages from each lot, batch, day’s pack, or other unit of production in a shipment. When no markings distinguishing between units of production appear, samples shall be taken from different packages in the ratio of two samples for each 4540 kg or 10 000 lb, except that for shipments of less than 10 000 Ib, two samples shall be taken. At the option of the purchaser, the samples may be tested separately or after blending in equal quantities the samples ftom the same production unit to form a composite sample.ASTM D768 pdf download.

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