1、Designation:D8384(Reapproved 2014)Standard Specification forRed Lead Pigment1This standard is issued under the fixed designation D83;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses ind
2、icates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers four grades of red pigmentcommercially known as red lead.The pigment may be pur-chased in the dry form or as a paste in oil.1.2 The values
3、stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2D49 Test Methods of Chemical Analysis of Red LeadD185 Test
4、Methods for Coarse Particles in PigmentsD1208 Test Methods for Common Properties of CertainPigments3.Composition and Properties3.1 Dry PigmentThe pigment shall be made by roastinglitharge or metallic lead,or compounds of lead that yieldlitharge by heating,and shall consist entirely of oxides of lead
5、,free of adulterants.The four grades of pigment shall conformto the following requirements:True red lead(Pb3O4),min,%:85%grade8595%grade9597%grade9798%grade98Total impurities including moisture,water solublematter,and matter insoluble in a mixture ofnitric acid and hydrogen peroxide,max,%1.0Lead mon
6、oxide,PbOremainderCoarse particles(total residue retained on a 45-m(No.325)sieve),max,%1.0When mixed as indicated in the following table,the resultingpaint,brushed on a smooth vertical iron surface,shall dry hardand elastic without running,streaking,or sagging:Dry red lead20 lb(9.1 kg)Raw linseed oi
7、l5 pt(2.4 L)Turpentine2 gills(0.24 L)Liquid drier2 gills(0.24 L)3.2 Paste in OilThe paste shall be made by thoroughlygrinding the specified pigment with linseed oil(Note 1).Thepaste as shipped by the seller,and for three months thereafter,shall not be caked in the container,and shall break up readil
8、yin oil to form a smooth paint of brushing consistency.The pasteshall conform to the following requirements:Pigment,%92 to 94Linseed oil,%6.0 to 8.0Moisture and other volatile matter,max,%0.5Coarse particles and skins(total residue retained ona No.325(45-m)sieve),max,%of the dry pigment1.5When mixed
9、 as indicated in the following table,the resultingpaint,brushed on a smooth,vertical iron surface,shall dry hardand elastic without running,streaking,or sagging:Red lead paste20 lb(9.1 kg)Raw linseed oil3 pt(1.4 L)Turpentine2 gills(0.24 L)Liquid drier2 gills(0.24 L)NOTE1The storage of paste red lead
10、 in places of high temperatureshould be avoided,as heat accelerates the tendency of this material to cakeor harden.Purchasers are cautioned that 85%grade red lead should not bebought in paste form.The 95%grade,if made into paste,should be usedwithin a short period of time after grinding.When pure re
11、d lead paste isto be stored for a considerable period of time,the 97%or 98%grade ofred lead should be specified.Therefore the manufacturer shall identify thegrade of red lead used in the paste and the date of manufacture.4.Sampling4.1 Two samples shall be taken at random from differentpackages from
12、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 each10 000 lb(5000 kg),except that for shipments of less than10 000 lb two samples shall b
13、e taken.At the option of thepurchaser,the samples may be tested separately or afterblending in equal quantities the samples from the productionunit to form a composite sample.5.Test Methods5.1 Tests shall be conducted in accordance with the follow-ingASTM test methods.Test procedures not covered byA
14、STM1This 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 Pigment Specifications.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1921.Last
15、previous edition approved in 2008 as D83 84(2008)1.DOI:10.1520/D0083-84R14.2For 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
16、 website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 test methods shall be mutually agreed upon between thepurchaser and the seller.5.1.1 Chemical AnalysisTest Methods D49.5.1.2 Coarse ParticlesTest Methods D185.5.1.3 Pigment,Linseed Oil,and Moisture and Other VolatileMatter in Paste in OilTest Methods D1208.6.Keywords6.1 lead oxide;lead tetra oxide;pigment;red leadASTM International takes no position respecting the validity of an
