1、Designation: D602 81 (Reapproved 2012)Standard Specification forBarium Sulfate Pigments1This standard is issued under the fixed designation D602; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the barium sulfate pigmentscommercially known as barytes and blanc fixe.1.2 The values stated in SI units are to be r
3、egarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse Particles in PigmentsD280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD715 Test Methods fo
4、r Analysis of Barium Sulfate PigmentD1208 Test Methods for Common Properties of CertainPigments3. Composition and Properties3.1 The pigment shall consist of barium sulfate (BaSO4)without any admixture of other materials in the case of blancfixe, and without any admixture of other materials not natur
5、allyoccurring in the barite ore in the case of barytes, and whichconform to the following requirements:BarytesBlancFixeBarium sulfate, min, % 94 97Ferric oxide, max, % 0.05 0.02pH, min 3.5 3.5Matter soluble in water, max, % 0.2 0.2Moisture and other volatile matter, max, % 0.5 0.5Coarse particles (t
6、otal residue retained onNo. 325 (45-m sieve), max, %0.5 0.5Free silica (quartz, clays, or other foreignmaterials), max, %2.0 2.03.2 In such physical properties as are specified by thepurchaser, the pigment shall satisfactorily match a referencesample mutually agreed upon by the purchaser and the sel
7、ler.4. Sampling4.1 Two samples shall be taken at random from 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 of ea
8、ch5000 kg (10 000 lb), except that for shipments of less than 10000 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 sha
9、ll be conducted in accordance with the follow-ingASTM test methods. Test procedures not covered byASTMtest methods shall be mutually agreed upon by the purchaserand the seller.5.2 Coarse Particles in PigmentTest Methods D185.5.3 MoistureTest Methods D280.5.4 Barium Sulfate, Ferric Oxide, and Free Si
10、licaTestMethods D715.5.5 Hydrogen Ion Concentration and Matter Soluble inWaterTest Methods D1208.6. Keywords6.1 barium sulfate; barytes; blanc fixe; pigments1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct
11、 responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2012. Published November 2012. Originallyapproved in 1941. Last previous edition approved in 2007 as D602 81 (2007).DOI: 10.1520/D0602-81R12.2For referenced ASTM standards, visit the ASTM website, www.as
12、tm.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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1ASTM Inte
13、rnational 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 the validity of any such patent rights, and the riskof infringement of such rights, are entirely
14、 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. Your comments are invited either for revision of this standard or for additional standardsand sho
15、uld 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 have not received a fair hearing you shouldmake your views known to the ASTM Committee on Sta
16、ndards, 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D602 81 (2012)2
