Designation:D2232−14StandardTestMethodforEvaporatingResidueofNaphthalene1ThisstandardisissuedunderthefixeddesignationD2232;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftheevapo-rationresidueofnaphthalene.1.2Thistestmethodhasbeenfoundapplicabletodetermin-ingresidueintherangeof0.3and1.5wt%.1.3Indeterminingtheconformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7and8.1.2.ReferencedDocuments2.1ASTMStandards:2D3438PracticeforSamplingandHandlingNaphthalene,MaleicAnhydride,andPhthalicAnhydrideD4790TerminologyofAromaticHydrocarbonsandRelatedChemicalsD6809GuideforQualityControlandQualityAssuranceProceduresforAromaticHydrocarbonsandRelatedMa-terialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE145SpecificationforGravity-ConvectionandForced-VentilationOvensE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod2.2OtherDocument:OSHARegulations,29CFRparagraphs1910.1000and1910.120033.Terminology3.1SeeTerminologyD4790forthedefinitionoftermsusedinthistestmethod.4.SummaryofTestMethod4.1Aweighedquantityofnaphthaleneisheatedinatareddishfor3hat105°Cinaforced-draftovenandtheresidueisweighed.5.SignificanceandUse5.1Evaporationresidueisanempiricalmeasureofnonvola-tileimpuritiesinnaphthalene.This...
