ISO 04907-2-2023.docx

INTERNATIONA1.STANDARDISO4907-2editionFirst202304P1.asticsIonexchangeresin一PefminationofwatercontentofanionexchangeresinsinhydroxideformbycentrifugationReferencenumberISO490722023(E)COPYRIGHTPROTECTEDDOCUMENT©ISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InPSd1.Mc;GeatrOn1.<nm11nr1amaqmr6pW11o即fMM>Wsu°nmaytheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1.oworISO'smemberbodyinthecountr)oftherequester.f),WV>fifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsPageForewordivIntroductionv2 Scope13 Normativereferences14 Termsanddefinitions116 Reagents27 Apparatus28 Samp1.es3Procedure38.1RemoVa1.oftheeXterna1.Water398.2Determinationofwatercontent31Ca1.cu1.ation4TestReport4Annex A (normative)Samp1.ing5Annex B (informative)Formu1.aeandderivations7ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsttiugh(ISOtn11hnkoibMdm11t38wcekdHPttf1.PbCingbodymrHeDdmMiaiStandibWNSmOWhtd1.ysrrtIechnMaIcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenanceare蜘硼搬OfISo雇吃用啾es,s肺1.id1.m3限11I胸M蝴曲新N蜘椰曲邮叫CCOrdanCeJ新theeditoria1.ru1.esoftheISO/IECDirectives.Part2(seewwsv.iso.org/direc1.ives).假)(¾徽ents)aWNWontakest三嬲据i帆n曲郦圈西幌斓岫躁ntm部施酬岬榴IVQdaimedpatentrightsinrespectthereof.Asofthedateofpub1.icationofthisdocument,ISOhadnorreceivednoticeof（八）patent(三)whichmayberequiredtoimp1.ementthisdocument.However,imp1.ementorsare懈怖翻琳腑©tm部WWjSOQFg/眸IentS瞧媪肥加砒ion,扁MMSPOn赖岫油嬲部铀解Ora"suchpatentrights.Anytradeusedinthisconstitutenameendorsenent.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOSPeCifiCtermsand幽幽蛔豳酒侬遮W即辆O)assEif1.眦聚inwe帼"1.吼。nBar池帆四dead朝乩CSvbr¼11isoorgisoforeword.htmI.Thisdocumentwaschemica1.properties,preparedbyTechnica1.CommitteeISO/TC61,P1.astics,SubcommitteeSC5,Physica1.-AIistofa1.1.partsintheISO4907seriescanbefoundontheISOwebsite.由珏轨6“典fiftsHHiesthiscaRH(HftKFhoUWWW虫面图membe内相隔nationa1.standardsbody.AIntroductionAnionexchangeresinsinhydroxideformhavepoortherma1.stabi1.ity,sodirectdryingathightemperaturesshou1.dbeavoided.Thisdocumentso1.vesthisprob1.embyformtransitionprocessandconversion.Fonnu1.aeandderivationsaregiveninnnexB.ISO4907-2:2023(E)INTERNATIONA1.STANDARDP1.asticsIonexchangeresin一Determinationofwatercontentofanionexchangeresinsinhydroxideformbycentrifugation1ScoperesinsNormativereferencesconstitutesrequirementsaredocument.Fordatedinreferences,on1.ySomeeditiona1.1.citedapp1.ies.contentISO3696,Waterforana1.ytica1.1.aboratoryuseSpecificationandtestmethodsexchangeresinsinhydroxideform3 TermsanddefinitionsISOandIECmaintaintermino1.ogica1.databasesforus©inStandardiZatiOnatthefo1.1.owingaddresses:3.1 IECE1.ectropedia:avai1.ab1.eat411www.e1.e<4FopedFghydroxideformstyreneanionexchangeresinweak-basegroups1.texistinggenera1.freeamineInc1.udesthestrong-basegroupsexistinginhydroxideformandthe3.2watercontent4 Princip1.ewatercentrifugationTheconvertcontentch1.oridesamp1.ehydroch1.oricacid.theWashawaythedryingacid©ISO2023-A1.1.rightsFCSerVcdPart2:Thisdocumentspecifiestestmethodsbycentrifugationofwatercontentofstyreneanionexchange2inhydroxideform.Thefo1.1.owingdocumentsofthisreferredinthetextsuchawaythattheoroftheirForundatedreferences,the1.atesteditionofthereferenceddoment(inc1.udinganyamendments)app1.ies.ISO4907-3:2023,P1.asticsIonexchangeresinPart3:DeterminationofexchangecapacityofanionForthepurposesofthisdocument,thefo1.1.owingtermsanddefinitionsapp1.y.ISOOn1.inebrowsingp1.atform:avai1.ab1.eathttps:/www.iso.org/obpionictypeofstyreneanionexchangeresinsregeneratedbysodiumhydroxideso1.utionundertheconditionsspecifiedinthisdocumentNote1coentr),:aintermChatform.equi1.ibriumwatercontentinhydroxideformstyreneanionexchangeresin(3.1)Removetheexterna1.waterofthestyreneanionexchangeresininhydroxideformabsorbedenoughwithbyanhydrousethano1.andwateritoftheformbycanbetestedby1.ossofmassonexcessatIOS,aswe1.1.astheincrementofmassontheformconversion.5 ReagentsWARNINGReagentsusedinthisdocumentmaycanpotentia1.hazardstohumanhea1.thandtheenvironment.Ensurethattheinstructionsfortheuseofreagentsarestrict1.yfo1.1.owed.Un1.essotherwiseindicated,thereagentsspecifiedinthisdocumentshou1.dbeana1.ytica1.grade.Commercia1.1.yavai1.ab1.e,ready-madeso1.utionsmaybeused.5.1 Anhydrousethano1.5.2Water,grade2inaccordancewithISO3696.5.