Designation:D6268−21StandardPracticeforHandling,Transportation,andStorageofHFC-125,Pentafluoroethane(C2HF5)1ThisstandardisissuedunderthefixeddesignationD6268;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversguidanceanddirectiontosuppliers,purchasers,andusersinthehandling,transportation,andstorageofHFC-125,pentafluoroethane(C2HF5).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandard:2D6231SpecificationforHFC-125(Pentafluoroethane,C2HF5)2.2CGAStandards:3C-1MethodsforPressureTestingCompressedGasCylin-dersC-6StandardsforVisualInspectionofSteelCompressedGasCylindersC-7GuidetoClassificationandLabelingofCompressedGasesP-1StandardforSafeHandlingofCompressedGasesinContainersSB-1HazardsofRefillingCompressedRefrigerant(Haloge-natedHydrocarbon)GasCylindersSB-5HazardsofReusingDisposableRefrigerant(Haloge-natedHydrocarbon)GasCylindersSB-18UseofRefrigerant(HalogenatedHydrocarbons)Re-coveryCylinders2.3U.S.GovernmentStandards:449CFRPart172HazardousMaterialsTable,SpecialProvisions,HazardousMaterialsCommunications,Emer-gencyResponseInformation,TrainingR...