Designation:D8062−22StandardSpecificationforPurifiedTerephthalicAcid(PTA)withLowp-ToluicAcid1ThisstandardisissuedunderthefixeddesignationD8062;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverspurifiedterephthalicacid(PTA)foruseintheproductionofpolyestersforsuperfinedenierfiber.1.2Thefollowingappliestoallspecifiedlimitsinthisspecification:forpurposesofdeterminingconformancewiththisspecification,anobservedvalueoracalculatedvalueshallberoundedofftothenearestunitinthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.3ConsultcurrentOSHAregulations,supplier’sSafetyDataSheets,andlocalregulationsforallmaterialsusedinthisspecification.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D7881TestMethodforDeterminationof4-Carboxybenzaldehydeandp-ToluicAcidinPurifiedTerephthalicAcidbyCapillaryElectrophoresiswithRe-verseVoltageModeD7882TestMethodforDeterminationof4-Carboxybenzaldehydeandp-ToluicAcidinPurifiedTerephthalicAcidbyCapillaryElectrophoresiswithNor-malVoltageModeD7883TestMethodforDeterminationof4-Carboxybenzaldehydeandp-ToluicAcidinPurifiedTerephth...
