Designation:D4659−14StandardTestMethodsforPolyurethaneRawMaterials:DeterminationofSpecificGravityofIsocyanates1ThisstandardisissuedunderthefixeddesignationD4659;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodsdeterminethespecificgravityoftoluenediisocyanateandcrudemethylene-bis-(4-phenylisocyanate).Thesetestmethodsalsoareapplicabletomanyotherliquids.(SeeNote1.)1.1.1TestMethodA—Specificgravitybypycnometer,forhigh-accuracydetermination.1.1.2TestMethodB—Specificgravitybyhydrometer,foralessaccurate,butrapid,determination.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.ForspecificwarningandprecautionarystatementsseeSection7.NOTE1—ThereisnoknownISOequivalenttothisstandard.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD891TestMethodsforSpecificGravity,Apparent,ofLiquidIndustrialChemicalsD1193SpecificationforReagentWaterD4052TestMethodforDensity,RelativeDensity,andAPIGravityofLiquidsbyDigitalDensityMeterE100SpecificationforASTMHydrometersE202TestMethodsforAnalysisofEthyleneGlycolsandPropyleneGlycolsE2251SpecificationforLiquid-in-GlassASTMThermom-eterswithLow-HazardPrecisionLiquids3.Terminology3.1Definitions—FordefinitionsoftermsusedinthesetestmethodsseeTerminologyD883.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1specificgravity—theratiooftheweightinairofagivenvolumeofthematerialatastatedtemperaturetotheweightinairofanequalvolumeofwateratastatedtemperature.Itshallbeexpressedasspecificgravity,25/25°C,indicatingth...
