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1、Designation:D3546?05(Reapproved2011)StardTestMethodfFmicAcidinGlacialAceticAcid1ThisstardisissuedunderthefixeddesignationD3546thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevision

2、theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthefmicacid(otherreducingsu

3、bstances)contentofglacialaceticacidbyoxidationwithleadtetraacetate.21.2Fpurposesofdeterminingconfmanceofanobservedacalculatedvalueusingthistestmethodtorelevantspecificationstestresult(s)shallberoundedoff“tothenearestunit

4、”inthelastrighthdigitusedinexpressingthespecificationlimitinaccdancewiththeroundingoffmethodofPracticeE29.1.3ThevaluesstatedinSIunitsaretoberegardedasstard.Nootherunitsofmeasurementareincludedinthisstard.1.4Fhazardinfmat

5、ionguidanceseethesupplier’sMaterialSafetyDataSheets.1.5Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdet

6、erminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:3D1193SpecificationfReagentWaterE29PracticefUsingSignificantDigitsinTestDatatoDetermineConfmancewithSpecificationsE200PracticefPrepar

7、ationStardizationStageofStardReagentSolutionsfChemicalAnalysis3.SummaryofTestMethod3.1Inanaqueousaceticacidsolutioneachmoleculeoffmicacidisoxidizedtoonemoleculeofcarbondioxidebyreductionofonemoleculeofleadtetraacetate.Th

8、eamountofleadtetraacetateremainingisthendeterminedbyaddingpotassiumiodidetitratingtheliberatediodinewithstandardsodiumthiosulfatesolutiontothestarchendpoint.4.SignificanceUse4.1Thistestmethodisusefulfdeterminingthefmicac

9、idcontentofglacialaceticacidbychemicalmeans.4.2Lowmolecularweightganicacids(suchasaceticpropionic)aldehydes(includingfmaldehydeacetaldehyde)ketonesalcohols(includingmethylalcohol)donotinterferewiththetest.4.3Fmicacid(oth

10、erreducingsubstances)maybepresentasaresultofcontaminationduringstagedistributionmanufacture.Thistestmethodmaybeusedinassessingcompliancewithaspecification.5.Reagents5.1PurityofReagents—Reagentgradechemicalsshallbeusedina

11、lltests.UnlessotherwiseindicateditisintendedthatallreagentsshallconfmtothespecificationsoftheCommitteeonAnalyticalReagentsoftheAmericanChemicalSocietywheresuchspecificationsareavailable.4Othergradesmaybeusedprovideditisf

12、irstertainedthatthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningtheaccuracyofthedetermination.5.2PurityofWater—UnlessotherwiseindicatedreferencetowatershallbeunderstoodtomeanreagentwaterconfmingtoTypeIV

13、ofSpecificationD1193.5.3LeadTetraacetateSolution—Dissolvecompletely40.0gofsodiumacetatein1Lofglacialaceticacidthendissolve40.0gofleadtetraacetate.5.4SodiumThiosulfateStardSolution(0.1N)—Preparestardize0.1Nsodiumthiosulfa

14、te(Na2S2O3)asdescribedinPracticeE200.1ThistestmethodisunderthejurisdictionofASTMCommitteeD01onPaintRelatedCoatingsMaterialsApplicationsisthedirectresponsibilityofSubcommitteeD01.35onSolventsPlasticizersChemicalIntermedia

15、tes.CurrenteditionapprovedFeb.12011.PublishedFebruary2011.iginallyapprovedin1976.Lastpreviouseditionapprovedin2005asD3546–05.DOI:10.1520D354605R11.2PerlinA.S.“DeterminationofFmicAcidbyOxidationwithLeadTetraacetate”Analyt

16、icalChemistryVol261954pp.1053–1054.3FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.4ReagentChemic

17、alsAmericanChemicalSocietySpecificationsAmericanChemicalSocietyWashingtonDC.FsuggestionsonthetestingofreagentsnotlistedbytheAmericanChemicalSocietyseeAnalarStardsfLabatyChemicalsBDHLtd.PooleDsetU.K.theUnitedStatesPharmac

18、opeiaNationalFmularyU.S.PharmacopeialConventionInc.(USPC)RockvilleMD.ASummaryofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1SUMMARYO

19、FCHANGESCommitteeD01.35hasidentifiedthelocationofedchangestothisstardsincethelastissue(D3546–90(1999))thatmayimpacttheuseofthisstard.(1)AddedreferencetoPracticeE29in1.2oftheScopesection.(2)AddedPracticeE29tolistofReferen

20、cedDocuments.ASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentright

21、stheriskofinfringementofsuchrightsareentirelytheirownresponsibility.Thisstardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfiveyearsifnotrevisedeitherreapprovedwithdrawn.Yourcommentsare

22、invitedeitherfrevisionofthisstardfadditionalstardsshouldbeaddressedtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommitteewhichyoumayattend.Ifyoufeelthatyou

23、rcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStardsattheaddressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959UnitedStates.In

24、dividualreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycontactingASTMattheaboveaddressat6108329585(phone)6108329555(fax)(email)throughtheASTMwebsite(www.astm.g).Permissionrightstophotocopythestardmayalsobesecure

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