Designation:D2501−14(Reapproved2019)StandardTestMethodforCalculationofViscosity-GravityConstant(VGC)ofPetroleumOils1ThisstandardisissuedunderthefixeddesignationD2501;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthecalculationoftheviscosity-gravityconstant(VGC)ofpetroleumoils2havingviscositiesinexcessof5.5mm2/sat40°C(104°F)andinexcessof0.8mm2/sat100°C(212°F).1.2AnnexA1describesamethodforcalculatingtheVGCfromSaybolt(SUS)viscosityandrelativedensity.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3.1TheSIunitofkinematicviscosityismm2/s.1.3.2Exception—Fahrenheittemperatureunitsareusedinthispracticebecausetheyareacceptedbyindustryforthetypeoflegacyconversionsdescribedinthispractice.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:3D287TestMethodforAPIGravityofCrudePetroleumandPetroleumProducts(HydrometerMethod)D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D1298TestMethodforDensity,RelativeDensity,orAPIGravityofCrudePetroleumandLiquidPetroleumProd-uctsbyHydrometerMethodD2140PracticeforCalculatingCarbon-TypeCompositionofInsulatingOilsofPetroleumOriginD4052TestMethodforDensity,RelativeDensity,andAPI...
