1、Designation: D 602 81 (Reapproved 2007)Standard Specification forBarium Sulfate Pigments1This standard is issued under the fixed designation D 602; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 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 barium sulfate pigmentscommercially known as barytes and blanc fixe.1.2 The values stated in SI units are to b
3、e regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D 185 Test Methods for Coarse Particles in PigmentsD 280 Test Methods for Hygroscopic Moisture (and OtherMatter Volatile Under the Test Conditions) in PigmentsD 715 Test Meth
4、ods for Analysis of Barium Sulfate Pig-mentD 1208 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 n
5、ot naturallyoccurring 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 3.5BarytesBlancFixeMatter soluble in water, max, % 0.2 0.2Moisture and other volatile matter, max, % 0.
6、5 0.5Coarse particles (total 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 t
7、he purchaser and the seller.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 ra
8、tio of two samples of each5000 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. T
9、est Methods5.1 Tests shall 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 D 185.5.3 MoistureTest Methods D 280.5.4 Barium Sulfate,
10、 Ferric Oxide, and Free SilicaTestMethods D 715.5.5 Hydrogen Ion Concentration and Matter Soluble inWaterTest Methods D 1208.6. Keywords6.1 barium sulfate; barytes; blanc fixe; pigments1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Ap
11、plications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1941. Last previous edition approved in 2003 as D 602 81 (2003).2For referenced ASTM standards, visit the ASTM website, ww
12、w.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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM
13、 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 the validity of any such patent rights, and the riskof infringement of such rights, are ent
14、irely 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 standardsan
15、d 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 have not received a fair hearing you shouldmake your views known to the ASTM Committee o
16、n 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 602 81 (2007)2
