1、Designation:D8384(Reapproved 2020)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.1.3 This international standard was developed in accor-dance with internationally recognized principl
4、es on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D49 Test Methods of Chemical Analysis o
5、f Red LeadD185 Test 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 entire
6、ly of oxides of lead,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 perox
7、ide,max,%1.0Lead monoxide,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
8、.1 kg)Raw linseed oil5 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 s
9、hall break up readilyin 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
10、pigment1.5When 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: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 stora
11、ge of paste red lead 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 g
12、rinding.When pure red 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.1This specification is under the jurisdiction of ASTM Commi
13、ttee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved June 1,2020.Published June 2020.Originallyapproved in 1921.Last previous edition approved in 2014 as D83 84(2014).DOI:10.1520/D00
14、83-84R20.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box
15、 C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the Wo
16、rld Trade Organization Technical Barriers to Trade(TBT)Committee.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 for each10 000 lb(5000 kg),except that for shipments of less than10 000 lb two samples shall be taken.At the option of thepurchaser,the samples may be