1、Designation: D 263 05Standard Specification forChrome Oxide Green Pigment1This standard is issued under the fixed designation D 263; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses
2、 indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers the dry pigment commerciallyknown as chrome oxid
3、e green.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D 126 Test Methods for Analysis of Yellow, Orange, andGreen Pigments Containing Lead Chromate and Chro-mium Oxide GreenD 185
4、 Test Methods for Coarse Particles in Pigments,Pastes, and PaintsD 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in Pigments3. Composition and Properties3.1 The pigment shall consist of practically pure chromiumsesqui-oxide (Cr2O3) without any admixtu
5、re, and shall con-form to the following requirements:Total chromium (calculated as Cr2O3), min, % 98Total matter soluble in water, max, % 0.5Moisture and other volatile matter, max, % 0.5Coarse particles (total residue retained on a No.325 (45-m) sieve), max, %1.0Organic colors or lakes none3.2 The
6、mass color and character of the tint and the tintingstrength formed by a mixture with a white pigment shall bewithin mutually agreed upon limits of a standard acceptable toboth the purchaser and the seller.4. Sampling4.1 Two samples shall be taken at random from differentpackages from each lot, batc
7、h, days pack, or other unit ofproduction in a shipment. When no markings distinguishingbetween units of production appear, samples shall be takenfrom different packages in the ratio of two samples for each4545 kg (10 000 lb) except that for shipments of less than10 000 lb two samples shall be taken.
8、 At the option of thepurchaser, the samples may be tested separately or afterblending in equal quantities the samples from the sameproduction unit to form a composite sample.5. Test Methods5.1 Tests shall be conducted in accordance with the follow-ing methods where applicable. Test procedures not co
9、vered byASTM test methods shall be mutually agreed upon between thepurchaser and the seller.5.2 Chromium ContentTest Methods D 126.5.3 Total Matter Soluble in WaterTest Methods D 126.5.4 Moisture ContentTest Method D 280.5.5 Coarse ParticlesTest Methods D 185.5.6 Organic Colors and LakesTest Methods
10、 D 126.6. Keywords6.1 chrome oxide green; chromium sesqui-oxide; pigment;tint; tinting strength; white pigment1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigmen
11、t Specifications.Current edition approved May 15, 2005. Published June 2005. Originallyapproved in 1927. Last previous edition approved in 1999 as D 263 75 (1999).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book
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15、ceive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM In
16、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D263052
