1、Designation:D237119Standard Test Method forPigment Content of Solvent-Reducible Paints1This standard is issued under the fixed designation D2371;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the procedure for the quantita-tive separa
3、tion of the vehicle from the pigment in solvent-reducible coatings.1.2 This test method has been proven to be applicable to thefollowing types of paints:white linseed oil outside house paint,white soya and phthalic alkyd enamel,white linseed o-phthalicalkyd enamel,red lead primer,zinc chromate prime
4、r,flat whiteinside enamel,white epoxy enamel,white vinyl toluenemodified alkyd,and white amino modified baking enamel.It isconsidered to be applicable to most solvent-reducible paints.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informat
5、iononly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to
6、use.Specific hazard statements are given in Section 6.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued
7、 by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2698 Test Method for Determination of the Pigment Con-tent of Solvent-Reducible Paints by High-Speed Centri-fuging3.Significance and Use3.1 This test method is suitable for setting sp
8、ecifications forthe pigment content of solvent-reducible paints as well as formonitoring manufacturing quality control.3.2 This test method provides the isolated pigment fractionfrom solvent-reducible paints that may be used for pigmentanalysis.4.Apparatus4.1 Centrifuge,explosion-proof,capable of de
9、veloping1000 to 2000 g.NOTE1The centrifuge should be equipped with a suitable head to takethe proper size trunnion cups necessary for use of the 90-mL tubes or120-mL(4-oz)bottles.A two,four,or six-place head can be used with thebottles and an eight-place head can be used with the tubes.4.2 Centrifug
10、e Tube,90-mL,heavy-walled.In place of the90-mL centrifuge tube a 120-mL(4-oz)screw cap bottle withvinyl-lined screw cap may be used.34.3 Laboratory Oven,vented and capable of maintaining atemperature of 105 6 2C.4.4 Syringe,5-mL.4.5 Water Bath.5.Solvents5.1 Ethyl Ether or Petroleum Ether:(WarningSee
11、 6.1).5.2 Extraction MixtureMix 10 volumes of ethyl ether,6volumes of benzene or toluene,4 volumes of methyl alcohol,and 1 volume of acetone(WarningSee 6.2,6.3,and 6.4).6.Hazards6.1 Ethyl Ether and Petroleum EtherFlammable.Vapor isharmful.May be fatal if inhaled or swallowed.Use only withadequate ve
12、ntilation.Avoid prolonged contact with skin.Avoid1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.Current edition approve
13、d Dec.15,2019.Published January 2020.Originallyapproved in 1965.Last previous edition approved in 2010 as D2371 85(2010)which was withdrawn July 2019 and reinstated December 2019.DOI:10.1520/D2371-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service a
14、t serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The sole source of supply of bottles and caps,Cat.No.S9185C,4-oz bottle,known to the committee at this time is Sargent Welch Scientific,7300 N.LinderAve.,Skokie,IL 6
15、0076.If you are aware of alternative suppliers,please provide thisinformation to ASTM International Headquarters.Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,Wes
16、t 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 World Trade Organization Technical Barriers to Trade(TBT)Committee.contact with flame,hot surface,or sparks.Do not get in eyes,on skin,or on clothing.Refer to suppliers Material SafetyData Sheet.6.2 AcetoneFlamm