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This specification covers molybdate orange dry pigments made by chemical coprecipitation of lead chromate and lead molybdate, with or without admixtures of other insoluble lead compounds or other materials. Mixing the pigments with a white pigment should produce tints with required mass colors and characters. The dry pigments should be subjected to chemical analysis, The dry pigments should conform to the specified requirements for chromium content, molybdenum content, moisture and other volatile matter content, coarse particle content, water-soluble matter content, mass color and tinting strength, and resistance to loss of gloss, chalking, and color change.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.3 The following hazard caveat applies to the test method portion of this specification only. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D126 Test Methods for Analysis of Yellow, Orange, and Green Pigments Containing Lead Chromate and Chromium Oxide Green
D185 Test Methods for Coarse Particles in Pigments
D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
D387 Test Method for Color and Strength of Chromatic Pigments with a Mechanical Muller
D523 Test Method for Specular Gloss
D600 Specification for Liquid Paint Driers
D822 Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings
D1210 Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage
E97 Method of Test for Directional Reflectance Factor, 45-Deg 0-Deg, of Opaque Specimens by Broad-Band Filter Reflectometry
Federal SpecificationTT-R-266 Resin, Alkyd; Solutions Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.
ICS Number Code 87.060.10 (Pigments and extenders)
UNSPSC Code 31211503(Pigment paints)