Designation:D8301−21StandardTestMethodforDeterminationoftheContentofNitroxideRadical(4-Hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl)inButadiene,StyreneandIsoprenebyCyclicVoltammetryMethod1ThisstandardisissuedunderthefixeddesignationD8301;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisdesignedtodeterminethecontentofnitroxideradical4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl(H-Tempo)inbutadiene,isoprene,andstyrene.1.2Thistestmethodisapplicabletosampleswithnitroxideradical4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl(H-Tempo)withconcentrationsto100mg⁄kg.Thelimitofdetection(LOD)is0.47mg/kgfornitroxideradical4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl(H-Tempo)andthelimitofquantitation(LOQ)is1.6mg/kgnitroxideradical4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl(H-Tempo).1.3Thefollowingappliesforthepurposesofdeterminingtheconformanceofthetestresultsusingthistestmethodtoapplicablespecifications,resultsshallberoundedofinaccor-dancewiththerounding-offmethodofPracticeE29.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterE29PracticeforUsingSignificantDigitsinTestDatatoDetermineCo...
