1、Designation:D420907(Reapproved 2013)Standard Practice forDetermining Volatile and Nonvolatile Content of Cellulosics,Emulsions,Resin Solutions,Shellac,and Varnishes1This standard is issued under the fixed designation D4209;the number immediately following the designation indicates the year oforigina
2、l 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.Scope*1.1 This practice is intended to serve as a guide to theselection of the pro
3、per ASTM test method for determining thevolatile and nonvolatile content of cellulosics,emulsions,resinsolutions,shellac,and varnishes.NOTE1Standards for determining the composition of the volatilefraction are not covered by this practice.1.2 The standards referenced in the practice are as follows:C
4、lassificationSectionASTM StandardCellulosics5.1D871D914D1347Emulsions5.2D2369Resin Solutions5.3D1259D1490Shellac5.4D29D1650Varnishes5.5D115D16441.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.2.Referenced Documents2.1 ASTM S
5、tandards:2D16 Terminology for Paint,Related Coatings,Materials,andApplicationsD29 Test Methods for Sampling and Testing Lac Resins(Withdrawn 2005)3D115 Test Methods for Testing Solvent Containing Var-nishes Used for Electrical InsulationD360 Specification for Shellac VarnishesD871 Test Methods of Te
6、sting Cellulose AcetateD914 Test Methods for EthylcelluloseD1259 Test Methods for Nonvolatile Content of ResinSolutionsD1347 Test Methods for Methylcellulose(Withdrawn2003)3D1490 Test Method for Nonvolatile Content of Urea-Formaldehyde Resin SolutionsD1644 Test Methods for Nonvolatile Content of Var
7、nishesD1650 Test Methods for Sampling and Testing ShellacVarnish(Withdrawn 1997)3D2369 Test Method for Volatile Content of CoatingsD4758 Test Method for Nonvolatile Content of Latexes(Withdrawn 2007)33.Terminology3.1 Definitions:3.1.1 The definitions contained in Terminology D16 areapplicable to thi
8、s practice.3.1.2 cellulose ester,nderivatives of cellulose in whichone or more of the hydroxyl hydrogens have been replaced byacyl groups.3.1.3 cellulose ether,nderivatives of cellulose in whichone or more of the hydroxyl hydrogens have been replaced byalkyl groups.3.1.4 cellulose nitrate(nitrocellu
9、lose),nderivatives ofcellulose in which one or more of the hydroxyl hydrogens havebeen replaced by nitrate groups.3.1.5 emulsion vehicle,nan emulsion of binder in water.The binder may be oil,oleoresinous varnish,resin,or otheremulsifiable liquid.3.1.6 latex,na stable aqueous dispersion of syntheticr
10、esin,produced by emulsion polymerization,as the principalconstituent of the binder.3.1.7 shellac varnish,na solution or“cut”of a specifiedtype and grade of dry lac resin in a suitable alcohol.3.1.8 varnish,na liquid composition that is converted byoxidation or thermal cross-linking to a transparent
11、or translu-cent solid film after application as a thin layer.4.Significance and Use4.1 The nonvolatile content of raw materials may be used todetermine the total nonvolatile content(solids)of paint and1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materia
12、ls,and Applications and is the direct responsibility ofSubcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.Current edition approved June 1,2013.Published June 2013.Originallyapproved in 1982.Last previous edition approved in 2007 as D4209 07.DOI:10.1520/D4209-07R13.2For referenced
13、 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.o
14、rg.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 related coatings.Such information may be useful to coatingsproducers and users for the determination of the total solidsav
15、ailable for film formation and for the estimation of thevolatile organic content.5.Procedure5.1 Cellulosics:5.1.1 Test Methods D1644,Method A,should be used fordetermining the amount of alcohol present in nitrocelluloseshipments.This method may also be used for other cellulosederivatives if mutually
16、 agreed upon by producer and user.5.1.2 Moisture in three different cellulose derivatives maybe determined using test methods given in the followingstandards:Cellulose DerivativeASTM StandardSectionCellulose acetateD87134EthylcelluloseD91446MethylcelluloseD1347345.2 Emulsions and Latices:5.2.1 Test Method D2369,Procedure B may be used todetermine the nonvolatile and volatile content of most emul-sions.Important considerations are the presence of volatileplasticizers and surfactants and the prese
