Designation:F2331−11StandardTestMethodforDeterminingChemicalCompatibilityofSubstancesinContactwithThermoplasticPipeandFittingsMaterials1ThisstandardisissuedunderthefixeddesignationF2331;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodisusedfordeterminingchemicalcompatibilityofsubstancesincontactwiththermoplasticpipeandfittingsmaterials.1.2Thistestmethodisnotintendedtoevaluatethesuitabil-ityofsolventcementsoradhesivesusedtojoinplasticpiping.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D638TestMethodforTensilePropertiesofPlastics3.SummaryofTestMethod3.1Theprocedureusestensilespecimentestbarsinalongitudinaltensiletestgeometryinaconstantload(creep)method.Allproceduresarerunatanambienttemperatureof73°F(23°C).4.SignificanceandUse4.1Theseprocedurescanbeusedtoevaluatechemicalsormaterialsexpectedtocomeincontactwithplasticpipingrelativetocausingenvironmentalstress-crackinginthermo-plasticmaterials.Thistestingresultsindeterminingtime-to-failurevs.engineeringstress.Thisprocedurecanalsobeusedinstress-ruptureregressionanalysis,whereavarietyofstresslevelsareneeded.Themethodologycanbereadilyadaptedtoconductingimmersiontestsinliquidsortestingtemperaturesotherthan73°F(23°C).5.Interferences5.1Intheseprocedures,theremaybeinterferenceeffectsduetodifferencesinresinortheadditivesinthethermoplasticmaterials.Untilsuchtimeasdataisavailableto...
