1、Designation: D 1649 01 (Reapproved 2006)Standard Specification forStrontium Chromate Pigment1This standard is issued under the fixed designation D 1649; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the pigment commerciallyknown as strontium chromate which is suitable for use in themanufacture of protective
3、 or decorative coatings.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 387 Test Method for Color and Strength of ChromaticPigments with a Mechanical MullerD 1208 Test Methods fo
4、r Common Properties of CertainPigmentsD 1845 Test Methods for Chemical Analysis of StrontiumChromate Pigment3. Composition and Properties3.1 Dry PigmentThe pigment shall be commercially purestrontium chromate-free of extenders and organic material,except for materials introduced to improve those pro
5、perties forwhich the pigment is used. The pigment shall conform to thefollowing requirements:percentStrontium as SrO, min 48Chromium as CrO3,min 47Chloride as Cl, max 0.1Sulfate as SO3, max 0.2Water content, max 0.2Coarse particles (total residue retained on No.325 (45-m) sieve), max1.03.2 The mass
6、color and character of the tint and 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 when tested in accordancewith Test Method D 387.4. Sampling4.1 Two samples shall be taken at random fro
7、m differentpackages from each lot, batch, 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 each4540 kg or 10 000 lb, except that for shipments of less
8、than10 000 lb, two samples shall be taken. 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 appro-priate ASTM
9、 test methods. Test procedures not covered byASTM test methods shall be mutually agreed upon between thepurchaser and the seller.5.1.1 Chemical AnalysisTest Methods D 1845.5.1.2 Water ContentTest Methods D 1208.6. Keywords6.1 chromate; corrosion inhibitor; pigment; strontium salt1This specification
10、is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2006. Published November 2006. Originallyapproved in 1959. Last previous edition
11、 approved in 2001 as D 1649 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International,
12、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of th
13、e validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. You
14、r comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments
15、 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 International, 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).D 1649 01 (2006)2
