Designation:D817−12(Reapproved2019)StandardTestMethodsofTestingCelluloseAcetatePropionateandCelluloseAcetateButyrate1ThisstandardisissuedunderthefixeddesignationD817;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresforthetestingofcelluloseacetatepropionatesandacetatebutyrates.Theseestersmayvarywidelyincompositionandproperties,socertainoftheprocedurescanbeusedonlyintherangesofcompositionwheretheyaresuitable.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thetestproceduresappearinthefollowingsections:SectionsAcetylPropionylorButyrylContents28–37AcetylContent,Apparent18–27Acidity,Free12–17Ash7–10ColorandHaze77–81HeatStability57–65HydroxylContent38–44HydroxylContent,Primary46–50IntrinsicViscosity67–71MoistureContent5-6SulfurorSulfateContent51–56Viscosity74-75LimitingViscosityNumber67–711.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D618PracticeforConditioningPlasticsforTestingD1343TestMethodforViscosityofCelluloseDerivativesbyBall-DropMethodD2929TestMethodforSulfurContentofCellulosicMate-rialsbyX-RayFluorescenceD5897TestMethodforDeterminationofPercentHydroxylonCelluloseEstersbyPotentiometricTitration—AlternativeMethod3.Reagents...
