ASTM_D_6133_-_02_2014.pdf

Designation:D613302(Reapproved 2014)Standard Test Method forAcetone,p-Chlorobenzotrifluoride,Methyl Acetate or t-ButylAcetate Content of Solventborne and Waterborne Paints,Coatings,Resins,and Raw Materials by Direct Injection Intoa Gas Chromatograph1This standard is issued under the fixed designation D6133;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.1.Scope1.1 This test method is for the determination of the total-concentration of acetone,p-chlorobenzotrifluoride,methylacetate,or t-butyl acetate,or combination of any of the four,insolvent-reducible and water-reducible paints,coatings,resins,and raw materials.Because unknown compounds that co-elutewith the analyte being measured or with the internal standard,will lead to erroneous results,this test method should only beused for materials of known composition so that the possibilityof interferences can be eliminated.The established workingrange of this test method is from 1%to 100%for each analyteby weight.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D3271 Practice for Direct Injection of Solvent-ReduciblePaints Into a Gas Chromatograph for Solvent AnalysisD3272 Practice for Vacuum Distillation of Solvents FromSolvent-Reducible Paints For Analysis(Withdrawn2008)3D6438 Test Method for Acetone,Methyl Acetate,andParachlorobenzotrifluoride Content of Paints,and Coat-ings by Solid Phase Microextraction-Gas Chromatogra-phyE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Summary of Test Method3.1 A suitable aliquot of whole paint is internallystandardized,diluted with an appropriate solvent,and theninjected into a gas chromatographic column that separates thechosen analytes from other volatile components.The analytecontent is determined from area calculations of the materialsproducing peaks on the chromatogram.4.Significance and Use4.1 With the need to calculate volatile organic content(VOC)of paints,and with acetone,p-chlorobenzotrifluoride,methyl acetate and t-butyl acetate4considered as exemptvolatile compounds,it is necessary to know the content ofthese analytes.This gas chromatographic test method providesa relatively simple and direct way to determine their content.However,because the detectors used in this test method are notselective,and because some coatings are very complexmixtures,compounds may be present in the sample that coelutewith the analyte,giving a result that is erroneously high.Or acomponent may elute with the internal standard,giving a resultthat is erroneously low.It is therefore important to know thecomposition of the sample to ensure that there are nointerferences,under the analysis conditions used.Test MethodD6438 employs mass-spectral detection of analytes and may beused as an alternative method.1This 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 approved July 1,2014.Published August 2014.Originallyapproved in 1997.Last previous edition approved in 2008 as D6133 02(2008).DOI:10.1520/D6133-02R14.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4At the time of the revision of this test method,t-butyl acetate was not yetapproved as an exempt solvent,but was under review by the USEPA and wasexpected to be approved.Therefore,it has been included in this test method.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Apparatus5.1 Gas ChromatographAny instrument with temperatureprogramming capability may be used.It should be equippedwith a flame ionization detector(see Table 1).5.2 ColumnAny column that provides baseline separationof the analyte of interest(acetone,p-chlorobenzotrifluoride,methyl acetate or t-butyl acetate),the internal standard,and anyvolatile present in the samples may be used.It should beunderstood that column performance may be influenced bymanufacturing co