1、Designation:D8187(Reapproved 2020)Standard Specification forBasic Carbonate White Lead Pigment1This standard is issued under the fixed designation D81;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber
2、in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the material commerciallyknown as basic carbonate white lead,used as a pigment and inputty.The pigment may be purchased i
3、n the dry form or as apaste in oil.1.2 The values 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 ac
4、cor-dance with internationally recognized principles 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
5、Standards:2D185 Test Methods for Coarse Particles in PigmentsD280 Test Methods for Hygroscopic Moisture(and OtherMatter Volatile Under the Test Conditions)in PigmentsD1208 Test Methods for Common Properties of CertainPigmentsD1301 Test Methods for Chemical Analysis of White LeadPigments3.Composition
6、 and Properties3.1 Dry PigmentThe pigment shall be free of adulterantsand shall contain not more than traces of impurities incident towell-controlled manufacture of high-grade basic carbonatewhite lead.The pigment shall conform to the followingrequirements:Lead carbonate,%62 to 75Moisture and other
7、volatile matter,max,%0.7Total other impurities,max,%1.0Coarse particles(total residue retained on a No.325(45-m)sieve),max,%1.03.2 Paste in OilThe paste shall be made by thoroughlygrinding the specified pigment with linseed oil.The paste shallnot be caked in the container and shall break up readily
8、in oilto form a smooth paint of brushing consistency.The paste shallconform to the following requirements:Pigment,min,%89Linseed oil,max,%11Moisture and other volatile matter,max,%0.7Coarse particles and skins(total residue retained on aNo.325(45-m)sieve),max,%of the drypigment1.53.3 Semipaste Conta
9、ining Volatile ThinnerThe semipasteshall be made by thoroughly grinding the specified pigmentwith a mixture of linseed oil and a small amount of volatilethinner.The semipaste shall not be caked in the container andshall be readily stirred to a uniform mixture which shall mixreadily with oil,turpenti
10、ne,or volatile petroleum spirits to forma smooth paint of brushing consistency.The odor of thesemipaste,as taken from the container,while drying or afterdrying,shall be not abnormally pungent or disagreeable.Thesemipaste shall conform to the following requirements:Pigment,min,%87.5Linseed oil,max,%1
11、0.5Moisture and other volatile matter,%A1.5 to 3.0Moisture,max,%0.7Coarse particles and skins(total residue retainedon a No.325(45-m)sieve),max,%of thedry pigment1.5AThe volatile matter shall be turpentine,volatile petroleum spirits,or any mixturethereof.3.4 The color and color strength,when specifi
12、ed,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 differentpackages from each lot,batch,days pack,or other unit ofproduction in a shipment.When no markings distinguishingbetween units of
13、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 than1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the di
14、rect responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Sept.1,2020.Published September 2020.Originallyapproved in 1921.Last previous edition approved in 2014 as D81 87(2014).DOI:10.1520/D0081-87R20.2For referenced ASTM standards,visit the ASTM website,www.astm.o
15、rg,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 StatesThis international sta
16、ndard 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 World Trade Organization Technical Barriers to Trade(TBT)Committee.110 000 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 sampl
