1、Designation:D 262 81(Reapproved 1999)Standard Specification forUltramarine Blue Pigment1This standard is issued under the fixed designation D 262;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 p
2、arentheses 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 dry pigment commerciallyknown as ultramarine blue,suitable for use in paints,enamels,lacquers,and similar products.2.Re
3、ferenced Documents2.1 ASTM Standards:D 185 Test Methods for Coarse Particles in Pigments,Pastes,and Paints2D 280 Test Methods for Hygroscopic Moisture(and OtherMatter Volatile Under the Test Conditions)in Pigments2D 387 Test Method for Color and Strength of Color Pig-ments with a Mechanical Muller3D
4、 1135 Test Methods for Chemical Analysis of Blue Pig-ments2D 1208 Test Methods for Common Properties of CertainPigments23.Composition and Properties3.1 The pigment shall be a manufactured product obtainedby the calcining of mixtures of clays and silicas with sodiumsalts,sulfur,and carbonaceous mater
5、ial.It shall be a soft,dry,finely ground powder of good blue color,free of admixtures ofcolor substances,and shall conform to the following require-ments:Matter soluble in water,max,%1.5Moisture and other volatile matter,max,%4.0Coarse particles(total residue retained on a No.325(45-m)sieve),max,%1.
6、0Organic colors or lakesnone3.2 The mass color and character of the tint and the tintingstrength formed by 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 diff
7、erentpackages 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 each 5tons(inch-pound or SI),except that for shipments of less than10 0
8、00 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 follow-ing methods.Test proce
9、dures not covered by ASTM methodsshall be mutually agreed upon between the purchaser and theseller.5.2 IdentificationTest Methods D 1135.5.3 Matter Soluble in WaterTest Methods D 1135.5.4 Moisture and Other Volatile Matter in Dry PigmentMethod A of Test Methods D 280 or Test Method D 1208.5.5 Coarse
10、 ParticlesTest Methods D 185.5.6 Organic Colors or LakesSection 18 of Test MethodsD 1135.5.7 Mass Color and Tinting Strength Test Method D 387.6.Keywords6.1 pigment;tint;tinting strength;ultramarine blue;whitepigment1This specification is under the jurisdiction of ASTM Committee D-1 on Paintand Rela
11、ted Coatings,Materials,andApplications,and is the direct responsibility ofSubcommittee D 01.31 on Pigment Specifications.Current edition approved Oct.30,1981.Published December 1981.Originallypublished as D 262 41 T.Last previous edition D 262 75.2Annual Book of ASTM Standards,Vol 06.03.3Annual Book
12、 of ASTM Standards,Vol 06.01.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentioned in this standard.Users of this
13、standard are expressly advised that determination of the validity of any suchpatent rights,and the risk of 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 a
14、ndif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee,which you may att
15、end.If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards,100 Barr Harbor Drive,West Conshohocken,PA 19428.This standard is copyrighted by ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.Individualreprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the above address or at 610-832-9585(phone),610-832-9555(fax),or serviceastm.org(e-mail);or through the ASTM website(http:/www.astm.org).D 2622
