Designation:D6740−15StandardTestMethodforSilanesUsedinRubberFormulations(bis-(triethoxysilylpropyl)sulfanes):ResidueonIgnition1ThisstandardisissuedunderthefixeddesignationD6740;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheresidueonignitionofsilanesofthetypebis-(triethoxysilylpropyl)sulfane,orofadmixturesofthesesilanesandsolidcarriers,suchascarbonblack,waxes,ororganicpolymers.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.SummaryofTestMethod3.1Inthistestmethod,asampleofthesilaneistreatedwithhydrochloricacidandthenignitedinamufflefurnaceat1000°C.Themassretainedafterthisprocedureiscalledtheresidueonignition.Itisexpressedinpercentageoftheinitialmass.4.SignificanceandUse4.1Theresidueonignition,whichconsistsessentiallyofSiO2,isrelatedtothesiliconcontentofthesilaneandmaybeusedtoverifythecompositionofthesilane.5.Apparatus5.1AnalyticalBalance,accuracy60.1mg.5.2HotPlateorVentilatedOven,placedinafumehood.5.3MuffleOven,(1000°C).5.4PorcelainCrucible(High-Form),capacity25cm3.5.5Beaker,500cm3.5.6GraduatedPipet,20cm3.5.7GraduatedCylinder,250cm3.5.8GlassRod.5.9Desiccator.6.Reagents6.1HydrochloricAcid,37%,analyticalgrade.6.2SulfuricAcid,96%,analyticalgrade.6.3DeionizedWater.6.4SilicaGlassWool.7.ProcedureNOTE1—Preheatporcelaincruciblesandsilica...
