1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 787-3:2001 Inco
2、rporating Corrigenda Nos. 1 and 2 The European Standard EN ISO 787-3:2000 has the status of a British Standard ICS 87.060.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW General methods of test for pigments and extenders Part 3: Determination of matter soluble in water Hot
3、extraction methodThis British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 January 2001 BSI 5 October 2001 ISBN 0 580 36850 5 BS EN ISO 787-3:2001 Amend
4、ments issued since publication Amd. No. Date Comments 13081 Corr. No. 1 March 2001 13422 Corr. No. 2 5 October 2001 Incorporating annex ZA. National foreword This British Standard is the official English language version of EN ISO 787-3:2000 including corrigendum November 2000. It is identical with
5、ISO 787-3:2000. It supersedes BS EN ISO 787-3:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee STI/1, Pigments, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any
6、enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Att
7、ention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the B
8、SI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are respo
9、nsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, page
10、s 1 to 4, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO7873 October2000 ICS08.006.10;87.060.10 SupersedesENISO7873:1995 Englishversion Generalmethodsoftestforpig
11、mentsandextendersPart3: DeterminationofmattersolubleinwaterHotextractionmethod (ISO7873:2000) Mthodesgnralesdessaidespigmentsetmatiresde chargePartie3:Dterminationdesmatiressolubles dansleauMthodeparextractionchaud(ISO787 3:2000) AllgemeinePrfverfahrenfrPigmenteundFllstoffeTeil 3:Bestimmungderwasser
12、lslichenAnteile Heiextraktionsverfahren(ISO7873:2000) ThisEuropeanStandardwasapprovedbyCENon1October2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliogr
13、aphicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtoth
14、eManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDI
15、ZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2000CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO7873:2000EgaPe2 INESO8772:3000 CORRECTED20010411 Foreword ThetextoftheInternationalS
16、tandardISO7873:2000hasbeenpreparedbyTechnical CommitteeISO/TC35“Paintsandvarnishes“incollaborationwithTechnicalCommittee CEN/TC298“Pigmentsandextenders“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardsupersedesENISO7873:1995. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,either
17、bypublication ofanidenticaltextorbyendorsement,atthelatestbyApril2001,andconflictingnational standardsshallbewithdrawnatthelatestbyApril2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,
18、 CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy, Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnited Kingdom. Endorsementnotice ThetextoftheInternationalStandardISO7873:2000wasapprovedbyCENasaEuropean Standardwithoutanymodification. NOTE:Normativere
19、ferencestoInternationalStandardsarelistedinannexZA(normative). ENISO7873:2000Referencenumber ISO787-3:2000(E) INTERNATIONAL STANDARD ISO 787-3 Secondedition 2000-10-01 Generalmethodsoftestforpigmentsand extenders Part3: Determinationofmattersolubleinwater Hotextractionmethod Mthodesgnralesdessaidesp
20、igmentsetmatiresdecharge Partie3:DterminationdesmatiressolublesdansleauMthodepar extractionchaud ENISO7873:2000ii ENISO7873:2000ISO7-783:(0002)Eiii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternat
21、ionalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaborate
22、scloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. Pub
23、licationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO787maybethesubjectofpatent rights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO787-3wasprepar
24、edbyTechnicalCommitteeISO/TC35,Paintsandvarnishes, SubcommitteeSC2,Pigmentsandextenders. Thissecondeditioncancelsandreplacesthefirstedition(ISO787-3:1979),whichhasbeentechnicallyrevised. ISO787consistsofthefollowingparts,underthegeneraltitleGeneralmethodsoftestforpigmentsandextenders: Part1:Comparis
25、onofcolourofpigments Part2:Determinationofmattervolatileat105C Part3:DeterminationofmattersolubleinwaterHotextractionmethod Part4:Determinationofacidityoralkalinityoftheaqueousextract Part5:Determinationofoilabsorptionvalue Part7:DeterminationofresidueonsieveWatermethodManualprocedure Part8:Determin
26、ationofmattersolubleinwaterColdextractionmethod Part9:DeterminationofpHvalueofanaqueoussuspension Part10:DeterminationofdensityPyknometermethod Part11:Determinationoftampedvolumeandapparentdensityaftertamping Part13:Determinationofwater-solublesulphates,chloridesandnitrates Part14:Determinationofres
27、istivityofaqueousextract Part15:Comparisonofresistancetolightofcolouredpigmentsofsimilartypes Part16:Determinationofrelativetintingstrength(orequivalentcolouringvalue)andcolouronreductionof colouredpigmentsVisualcomparisonmethod ENISO7873:2000ISO-7873:(0002)E iv Part17:Comparisonoflighteningpowerofw
28、hitepigments Part18:DeterminationofresidueonsieveMechanicalflushingprocedure Part19:Determinationofwater-solublenitrates(Salicylicacidmethod) Part21:Comparisonofheatstabilityofpigmentsusingastovingmedium Part22:Comparisonofresistancetobleedingofpigments Part23:Determinationofdensity(usingacentrifuge
29、toremoveentrainedair) Part24:Determinationofrelativetintingstrengthofcolouredpigmentsandrelativescatteringpowerofwhite pigmentsPhotometricmethods Part25:Comparisonofthecolour,infull-shadesystems,ofwhite,blackandcolouredpigmentsColorimetric method Part26:Determinationofrelativetintingstrengthandresid
30、ualcolourdifferenceofcolorantsWeightedK/S valuemethod ENISO7873:2000INTERNATIONALSTANDADR ISO-7873:(0002)E1 Generalmethodsoftestforpigmentsandextenders Part3: DeterminationofmattersolubleinwaterHotextractionmethod 1 Scope ThispartofISO787specifiesageneralmethodoftestfordeterminingthepercentagebymass
31、ofmattersolublein boilingwater,inasampleofpigmentorextender. ISO787-8specifiesamethodfordeterminingthepercentagebymassofmattersolubleinwaterbycoldextraction. Formostpigmentsandextenders,thesetwotestmethodswillgivedifferentresults,anditisthereforeessentialto stateclearlyinaspecificationwhichmethodist
32、obeused,andinthetestreportwhichmethodhasbeenused. NOTE ThegeneralmethodsgiveninthevariouspartsofISO787areusuallyapplicabletoanypigmentorextender.Thus onlyacross-referencetotheappropriatepartofISO787needstobeincludedintheInternationalStandardgivingthe specificationforthatpigmentorextender,indicatinga
33、nydetailedmodificationthatmaybeneededinviewofthespecial propertiesofthematerialinquestion.Onlywhenthegeneralmethodsarenotapplicabletoaparticularmaterialisadifferent methodfordeterminationofwater-solublemattertobespecified. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,th
34、roughreferenceinthistext,constituteprovisionsof thispartofISO787.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO787areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocuments
35、indicatedbelow.Forundated references,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO787-4:1981,GeneralmethodsoftestforpigmentsandextendersPart4:Determinationofacidityor alkalinityoftheaqueousextract. ISO787-8:200
36、0,GeneralmethodsoftestforpigmentsandextendersPart8:Determinationofmattersolublein waterColdextractionmethod. ISO1042:1998,LaboratoryglasswareOne-markvolumetricflasks. ISO15528:2000,Paints,varnishesandrawmaterialsforpaintsandvarnishesSampling. 3 Reagent 3.1 Water,freshlydouble-distilledorde-ionized,o
37、fpH6to7. Othertypesofwatermaybeusedbutonlybyagreementbetweentheinterestedparties. 4 Apparatus 4.1 One-markvolumetricflask,ofcapacity250ml,complyingwiththerequirementsofISO1042. ENISO7873:2000ISO-7873:(0002)E 2 4.2 Membranefilter. Othertypesoffiltermaybeusedbutonlybyagreementbetweentheinterestedparti
38、es. 4.3 Evaporatingdish,flat-bottomed,ofglass,platinum,glazedporcelainorsilica,driedtoconstantmass. 4.4 Waterbath. 4.5 Oven,capableofbeingmaintainedat(105 2)C. 4.6 Balance,accurateto1mgorbetter. 4.7 Desiccator,containinganefficientdesiccant. 5 Sampling Takearepresentativesampleofthematerialtobeteste
39、d,asdescribedinISO15528. 6 Procedure 6.1 General Carryoutthedeterminationinduplicate. 6.2 Testportion Weigh,tothenearest0,01g,2gto20gofthesample(m 0 )intoabeaker. Themassofthetestportionusedshallbechosenaccordingtothetypeofmaterialandtheamountofwater- solublematterinthematerial.Thisisparticularlyimp
40、ortantformaterialsthatcontainlargeamountsofmatter solubleinwater.Inanycase,thesametestportionmassshallbetakenforrepeattestsorfortestscarriedoutin severaldifferentlaboratories. 6.3 Determination Moistenthetestportioninthebeakerwithafewmillilitresofwater(3.1). Ifthematerialdoesnotdisperseeasilyinwater
41、,useawettingagent.Inthecaseofmaterialswhicharenotsoluble inethanol,anappropriatevolumeofethanolmaybeadded;inthecaseofpigmentssolubleinethanol,useanon- ionicwettingagentsuchas10mlofa0,01%solutionofanethyleneoxidecondensate.Ifthewettingagentisnon- volatileundertheconditionsoftest,anappropriatecorrecti
42、onderivedfromablanktestshallbemade. Add200mlofboilingwater(3.1)andstir.Unlessadifferentperiodisspecifiedforthematerialundertest,boilthe suspensionfor5min.Acoagulatingagentcanbeusedifthesemi-colloidalnatureofthematerialmakesthis desirable,providedthattheagentselectedisnotsuchastoaffectasubsequentdete
43、rminationoftheacidityor alkalinityoftheaqueousextract(seeISO787-4),andprovidedthatonlytheminimumquantityisused. Coolrapidlytoroomtemperature,transferthesolidandtheliquidtothevolumetricflask(4.1)anddilutetothemark withwater(3.1).Mixthoroughlybyshakingandinverting,andfilterimmediatelythroughthemembran
44、efilter(4.2), returningthefiltratetothefilteruntilthefiltrateisclear. Ifthetimebetweentheendoftheboilingandthebeginningofthefiltrationisspecified,itshallbeindicatedinthe testreport. Suspensionswhicharedifficulttofiltershallbecentrifuged. ENISO7873:2000ISO7-783:(0002)E3 Pipette100mloftheperfectlyclea
45、rfiltrateorcentrifugateintoapreviouslydriedandweighedevaporatingdish (4.3)andthenevaporateonthewaterbath(4.4). Drytheresidueintheevaporatingdishintheoven(4.5)at(105 2)C,coolinthedesiccator(4.7)andweighto thenearest1mg.Repeattheheatingandcoolinguntiltheresultsofthetwolastweighings,atanintervalincludi
46、ng atleast30minheating,donotdifferbymorethan10%ofthefinalweighing.Fromthelowerofthelasttwo weighings,calculateandrecordthemassoftheresidue(m 1 ). 7 Expressionofresults 7.1 Calculation Calculatethewater-solublematter(hotextractionmethod),M ws,h ,expressedasapercentagebymass,usingthe equation 1 ws,h 0
47、 2,5 100 m M m where m 0 isthemass,ingrams,ofthetestportion; m 1 isthemass,ingrams,oftheresidue. Ifthetworesultsdonotdifferbymorethan10%ofthelowervalue,calculateandreportthearithmeticmean.Ifthe differenceexceeds10%,carryoutathirddeterminationandreportthearithmeticmeanofallthreeresults. Ifthedifferen
48、cebetweentheresultofthethirddeterminationandthemeanoftheotherdeterminationsisalso greaterthan10%,statethisandtheindividualresultsinthetestreport. Expresstheresultstoonedecimalplace. 7.2 Reproducibility/repeatability Precisiondataarecurrentlynotavailable. FollowingthepublicationofISO/R787:1968,workwascarriedoutinanattempttoimprovereproducibili
