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ASTM D769-2019 pdf free download

ASTM D769-2019 pdf free download.Standard Specification for Black Synthetic Iron Oxide
1. Scope
1.1 This specification covers the pigment commercially known as black synthetic iron oxide. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards: 2 D50 Test Methods for Chemical Analysis ofYellow, Orange, Red, and Brown Pigments Containing Iron and Manga- nese D185 Test Methods for Coarse Particles in Pigments D280 Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments D387 Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller D1208 Test Methods for Common Properties of Certain Pigments D3872 Test Method for Ferrous Iron in Iron Oxides
3. Composition and Properties
3.1 The pigment shall be a manufactured ferrous-ferric oxide obtained by chemical reaction. It shall be a soft dry finely powdered pigment, free of admixtures of other substances and shall conform to the following requirements:3.2 The mass color and 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 acceptable to both the purchaser and the seller.
4. Sampling
4.1 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 lb, 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 from the same production unit to form a composite sample.
5. Test Methods
5.1 Tests shall be conducted in accordance with the appro- priate test methods. Test procedures not covered by ASTM test methods shall be mutually agreed upon between the purchaser and the seller. 5.1.1 Total Iron Oxides—Test Methods D50. 5.1.2 Ferrous Iron in Iron Oxides—Test Method D3872. 5.1.3 Water Soluble Matter, Maximum, Percent—Test Meth- ods D1208. 5.1.4 Moisture and Other Volatile Matter, Maximum, Percent—Test Methods D280. 5.1.5 Coarse Particles (Total Residue Retained on a 325- mesh sieve (45 µm), Maximum, Percent—Test Methods D185. 5.1.6 Hydrogen Ion Concentration (pH value)—Test Meth- ods D1208. 5.1.7 Mass Color and Tinting Strength—Test Method D387.
6. Keywords
6.1 black iron oxide; ferric oxide; ferrous oxide; iron oxide; manganese; pigment; synthetic iron oxide

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