Designation:D3516−89(Reapproved2019)´1StandardTestMethodsforAshingCellulose1ThisstandardisissuedunderthefixeddesignationD3516;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—EditorialupdatesmadetoSection2andFootnote4inDecember2019.1.Scope1.1Thesetestmethodscoverfourashingmethodsforcellulose.Theseareintendedforuseonunbleachedandbleachedcelluloseinsheetedorbulkfiberform.Eachoneofthetestmethodshasadvantages,sothatpreferenceapplica-tionsexistforallfour.1.2Thetestmethodsappearasfollows:SectionsTestMethodA—AshinCelluloseat575°C6to11TestMethodB—SulfatedAshinCelluloseat575°C12to17TestMethodC—AshingCellulosebySchonigerOxidation18to22TestMethodD—WetAshingofCelluloseforInorganics23to291.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,see20.6.1.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD1348TestMethodsforMoistureinCellulose(Withdrawn2017)33.SummaryofTestMethods3.1TestMethodA,AshinCelluloseat575°C—Thistestmethodmeasurestheashcontentofcellulose,whichisdefinedforthistestastheresidueremainingafterignitionat575625°Cuntilallcarbonhasbeenburnedoff.Itisthesimplestofthefourtestmethodsforthedeterminationofashcontenton...
