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This specification covers commercially pure chrome yellow and chrome orange pigments. The chemically precipitated pigments should consist of normal or basic lead chromates, or mixtures of these, with or without admixtures of other insoluble lead compounds. Pigment composition should conform to the required amounts of lead chromate, total matter soluble in water, total of all substances other than insoluble lead compounds, moisture and volatile matter, coarse particles, and organic colors and lakes for each of the six types.
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.
Type I—Primrose Chrome Yellow,
Type II—Lemon Chrome Yellow,
Type III—Medium Chrome Yellow,
Type IV—Light Chrome Orange,
Type V—Dark Chrome Orange, and
Type VI—Chrome Yellow for Green.
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
D562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer
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)