Designation:D411−08AnAmericanNationalStandardStandardTestMethodsforShellacUsedforElectricalInsulation1ThisstandardisissuedunderthefixeddesignationD411;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscovertestsforshellacinthedrybuttonorpowderformtobeusedforelectricalinsulatingpurposes.Typically,shellacisusedasabondingagentformicasplittingsandreconstitutedmicapaperproducts,orasacoatingoradhesiveforothermaterial.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE1—ThereisnosimilarorequivalentIECstandard.2.ReferencedDocuments2.1ASTMStandards:2D29TestMethodsforSamplingandTestingLacResins(Withdrawn2005)3D1711TerminologyRelatingtoElectricalInsulationD5032PracticeforMaintainingConstantRelativeHumiditybyMeansofAqueousGlycerinSolutionsD6054PracticeforConditioningElectricalInsulatingMate-rialsforTestingE104PracticeforMaintainingConstantRelativeHumiditybyMeansofAqueousSolutions3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthisstandard,refertoTerminologyD1711.4.GeneralTests4.1EachofthefollowingtestsshallbemadeinaccordancewiththeproceduresdescribedinTestMethodsD29:4.2Sampling,4.3InsolubleMatter,4.4IodineNumber,4.5MoistureContent,4.6Wax,4.7Ash,and4.8Orpiment(Nativearsenictrisulfide).POLYMERIZATIONTIME5.SignificanceandUse5.1Polymerizationtimeprovidesameasureoftimeduringwhichshellacretainsitsplasticityandflowpropertiesatthespecifiedtemperaturebeforegellingorpolymerizingtothetoughrubberyinsolubleform.Thistestisimportantindeter-miningthequalityo...
