Designation:D1766−05(Reapproved2021)StandardTestMethodforRubberChemicals—Solubility1ThisstandardisissuedunderthefixeddesignationD1766;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversapracticaltestforthesolubilityofcommercialchemicalsusedinrubberproducts.1.2Itisnotatruemeasureofsolubility,sinceequilibriumisnotapproachedfrombothsides,thatis,highertemperatureandlowertemperature.1.3Thetestmethodindicatesthetotalsolubility,undertheconditionsofthetest,ofallcomponentsinthepresenceofeachotherandintheproportionspresentinthesample.1.4Thistestmethoddoesnotmeasurethesolubilityofarubberchemicalinrubber.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E145SpecificationforGravity-ConvectionandForced-VentilationOvens3.SummaryofTestMethod3.1Thetestspecimenisshakeninaspecifiedvolumeofadesiredsolventataspecifiedtimeandtemperature.Solidsareallowedtosettleandaspecifiedaliquotoftheclearsupernatantsolventisquantitativelyremoved,thesolventevaporated,andthemassoftheresidueobtained.Fromthemassesoftheresidueandoriginalspecimen,thesolubilityofthespecimenisobtainedbycalculation.4.Signifi...
