ASTM_D_1135_-_86_2014.pdf

Designation:D113586(Reapproved 2014)Standard Test Methods forChemical Analysis of Blue Pigments1This standard is issued under the fixed designation D1135;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 parentheses 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 These test methods cover procedures for the chemicalanalysis of blue pigments known commercially as iron blue,copper phthalocyanine blue,and ultramarine blue.1.2 The analytical procedures appear in the following order:SectionsIRON BLUE PIGMENTSIdentification6Moisture by the Brabender Moisture Tester7 and 8Moisture by Toluene Distillation9Water-Soluble Matter by Extraction10Water-Soluble Salts by Electrical Conductivity11Detection of Acid-Insoluble Extenders12 and 13Detection of Acid-Soluble Extenders14 to 17Detection of Organic Colors and Lakes18COPPER PHTHALOCYANINE BLUE PIGMENTSIdentification19Moisture and Other Volatile Matter20Detection of Basic Dye Derivatives21Detection of Other Organic Coloring Matter22Detection of Ultramarine Blue23Detection of Iron Blue24ULTRAMARINE BLUEIdentification25Moisture and Other Volatile Matter26Water-Soluble Matter27Detection of Basic Dye Derivatives28Detection of Other Organic Coloring Matter291.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address the safetyconcerns associated with its use.It is the responsibility of theuser of this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D280 Test Methods for Hygroscopic Moisture(and OtherMatter Volatile Under the Test Conditions)in PigmentsD1193 Specification for Reagent WaterD1208 Test Methods for Common Properties of CertainPigmentsD2448 Test Method for Water-Soluble Salts in Pigments byMeasuring the Specific Resistance of the Leachate of thePigmentE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Significance and Use3.1 These test methods are suitable for determining ifimpurities are present and establishing that the required pig-ments are present.These test methods may be used formanufacturing quality control.4.Purity of Reagents and Water4.1 Purity of ReagentsUnless otherwise indicated,it isintended that all reagents shall conform to the specifications ofthe Committee onAnalytical Reagents of theAmerican Chemi-cal Society,where such specifications are available.3Othergrades may be used,provided it is first ascertained that thereagent is of sufficiently high purity to permit its use withoutlessening the accuracy of the determination.4.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water conformingto Type II of Specification D1193.1These test methods are under the jurisdiction of ASTM Committee D01 onPaint and Related Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.31 on Pigment Specifications.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1950.Last previous edition approved in 2009 as D1135 86(2009).DOI:10.1520/D1135-86R14.2For 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.3Reagent Chemicals,American Chemical Society Specifications,AmericanChemical Society,Washington,DC.For suggestions on the testing of reagents notlisted by the American Chemical Society,see Analar Standards for LaboratoryChemicals,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharmacopeiaand National Formulary,U.S.Pharmacopeial Convention,Inc.(USPC),Rockville,MD.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Preparation of Sample5.1 Mix the sample thoroughly and take a representativeportion for analysis.Reduce any lumps or coarse particles to afine powder by grinding.5.2 Grind extracted pigments to pass a No.80(180-m)sieve.4Discard any skins that do not pass through the sieve.Mix the finely ground pigment thoroughly.IRON BLUE(Prussian Blue,Chinese Blue,Milori Blue)IDENTIFICATION6.Procedure6.1 To approximately 0.1 g of pigment in a 50-mL beaker,add 15 mLof NaOH solution(50 g/L).Heat to boiling.In a fewminutes the blue color should be completely destroyed,givingin its place the characteristic reddish brown precipitate of ferrichydroxide.Add HCl(1+1)until faintly acid to litmus.The ironblue should be reformed,yielding again the characteristic bluecolor.NOTE1If the NaOH treatment does not completely dest