1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 1209:2003 Chemicals used for treatment of water intended for human consumption Sodium silicate The European Standard EN 1209:2003 has the status of a British Stan
2、dard ICS 71.100.80 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIBS EN 1209:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 January 2004 BSI 12 January 2004 ISBN 0 5
3、80 43220 3 National foreword This British Standard is the official English language version of EN 1209:2003. It supersedes BS EN 1209:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment, which has the re
4、sponsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Additional information Article 10 of the Council of the European Community Directive 98/83/EC on the quality of water intended for human consumption requires Member States to ensure th
5、at substances and materials (including associated impurities) used in the preparation of drinking water do not remain in treated water at concentrations that are higher than necessary or that would reduce the protection of public health provided for in the Directive. This requirement is given effect
6、 in England and Wales by regulation 25 of the Water Supply (Water Quality) Regulations 1989 (similar provisions apply in Scotland and Northern Ireland). Regulation 25 makes provision for attaching conditions of use to chemicals and filter media that are authorized for use in public water supplies. D
7、etails of conditions of use are contained in the List of Products and Processes Approved Under Regulations 25 and 26 For Use In Connection With The Supply of Water For Drinking, Washing, Cooking and Food Production Purposes published by the Drinking Water Inspectorate, Floor 2/A1, Ashdown House, 123
8、 Victoria Street, London SW1 6DE (www.dwi.gov.uk). Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “
9、Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from lega
10、l obligations. aid enquirers to understand the text; present to the responsible international/European committee any 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. Su
11、mmary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Com
12、ments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1209 December2003 ICS71.100.80 SupersedesEN1209:1997 Englishversion Chemicalsusedfortreatmentofwaterintendedforhuman consumptionSo
13、diumsilicate Produitschimiquesutilisspourletraitementdeleau destinelaconsommationhumaineSilicatedesodium ProduktezurAufbereitungvonWasserfrden menschlichenGebrauchNatriumsilikat ThisEuropeanStandardwasapprovedbyCENon10October2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichs
14、tipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,Fr
15、ench,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary
16、,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyform
17、andbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1209:2003E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 2 Contents page Foreword. 3 Introduction 4 1 Scope . 5 2 Normativereferences . 5 3 Description 6
18、 3.1 Identification 6 3.2 Commercialform. 6 3.3 Physicalproperties. 6 3.4 Chemicalproperties . 8 4 Puritycriteria. 8 4.1 General. 8 4.2 Compositionofcommercialproduct . . 8 4.3 Chemicalparametersandindicatorparameters . 8 5 Testmethods . 9 5.1 Sampling 9 5.2 Analyses 10 6 LabellingTransportationStor
19、age 19 6.1 Meansofdelivery. . 19 6.2 RiskandsafetylabellingaccordingtotheEUDirectives 19 6.3 Transportationregulationsandlabelling . 20 6.4 Marking 20 6.5 Storage. 20 AnnexA (informative) Generalinformationonsodiumsilicate 21 AnnexB (normative) Generalrulesrelatingtosafety 23 Bibliography . 24 Licen
20、sed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 3 Foreword Thisdocument(EN1209:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC164“Watersupply”,the secretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofa
21、nationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2004. ThisdocumentsupersedesEN1209:1997. SignificanttechnicaldifferencesbetweenthiseditionandEN1209:1997areasfollows: a) takingaccountofthenewE
22、UDirective98/83/EC; b) modificationofthelimitvalueofSbto33mg/kginsteadof60mg/kg; c) modificationofthelabellingrequirementsinrelationtothemolecularratioSiO 2 :Na 2 O; d) introductionofnewmethodsfortheanalysisofiron,sulfateandfluoridein5.2.2. AnnexAisinformative. AnnexBisnormative. Thisdocumentinclude
23、sabibliography. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portuga
24、l, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 4 Introduction Inrespectofpotentialadverseeffectsonthequalityofwaterintendedforhumanconsumption,causedbythe produ
25、ctcoveredbythisStandard: a) thisStandardprovidesnoinformationastowhethertheproductmaybeusedwithoutrestrictioninanyofthe MemberStatesoftheEUorEFTA; b) itshouldbenotedthat,whileawaitingtheadoptionofverifiableEuropeancriteria,existingnationalregulations concerningtheuseand/orthecharacteristicsofthispro
26、ductremaininforce. NOTE ConformitywiththisstandarddoesnotconferorimplyacceptanceorapprovaloftheproductinanyoftheMember StatesoftheEUorEFTA.TheuseoftheproductcoveredbythisEuropeanStandardissubjecttoregulationorcontrolby NationalAuthorities. Licensed Copy: Wang Bin, ISO/Exchange China Standards Inform
27、ation Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 5 1Scope ThisEuropeanStandardisapplicabletosodiumsilicateusedfortreatmentofwaterintendedforhuman consumption.Itdescribesthecharacteristicsandspecifiestherequirementsandthecorrespondingtestmethods forsodiumsilicate.Itgivesinformati
28、ononitsuseinwatertreatment. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyo
29、fthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN1483, WaterqualityDeterminationofmercury. EN26595, WaterqualityDeterminationoftotalarsenicSilverdiethyldithiocarb
30、amatespectrophotometricmethod (ISO6595:1982). ENISO3696, WaterforanalyticallaboratoryuseSpecificationandtestmethods(ISO3696:1987). ENISO11885,WaterqualityDeterminationof33elementsbyinductivelycoupledplasmaatomicemission spectroscopy(ISO1185:1996). ISO1689, Sodiumandpotassiumsilicatesforindustrialuse
31、Calculationoftheratio:silicondioxide/sodiumoxide orsilicondioxide/potassiumoxide ISO1690, SodiumandpotassiumsilicatesforindustrialuseDeterminationofsilicacontentGravimetricmethod byinsolubilization. ISO1692, SodiumandpotassiumsilicatesforindustrialuseDeterminationoftotalalkalinityTitrimetricmethod.
32、ISO3165, SamplingofchemicalproductsforindustrialuseSafetyinsampling ISO5961, WaterqualityDeterminationofcadmiumbyatomicabsorptionspectrometry. ISO6206, ChemicalproductsforindustrialuseSamplingVocabulary. ISO67031, WaterqualityDeterminationofcyanidePart1:Determinationoftotalcyanide. ISO8213,Chemicalp
33、roductsforindustrialuseSamplingtechniquesSolidchemicalproductsintheformof particlesvaryingfrompowderstocoarselumps. ISO8288,WaterqualityDeterminationofcobalt,nickel,copper,zinc,cadmiumandleadFlameatomic absorptionspectrometricmethods ISO9174, WaterqualityDeterminationofchromiumAtomicabsorptionspectr
34、ometricmethods. ISO9965, WaterqualityDeterminationofseleniumAtomicabsorptionspectrometricmethod(hydridetechnique) Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 6 3Description 3.1Identification 3.1.1 Chemicalname Sodi
35、umsilicate. 3.1.2 Synonymorcommonnames Waterglasssolution. 3.1.3 Relativemolecularmass Dependentonmolecularratio. 3.1.4 Empiricalformula Na 2 O. nSiO 2 with nbetween1,5and4,0. 3.1.5 Chemicalformula Na 2 O. nSiO 2 with nbetween1,5and4,0. 3.1.6 CASRegistryNumber 1) 1344098. 3.1.7 EINECSreference 2) 21
36、56874. 3.2 Commercialform Sodiumsilicateisavailableasacleartoslightlyopalescentcolourlessliquid,whichcanbemixedwithwaterinany ratio,oraspowderorgranularmaterial. 3.3 Physicalproperties 3.3.1Appearance Thesolidformisafine,whitepowder,orawhitegranularmaterial. Theliquidformiscleartoslightlyopalescent.
37、 1) ChemicalAbstractsServiceRegistryNumber. 2) EuropeanInventoryofExistingCommercialChemicalSubstances. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 7 3.3.2Density Solution: dependingonthemolecularratioofSiO 2 :Na 2
38、 Oandtheconcentration.Thedensityat20Ccanvaryfrom 1,2g/mlto1,7g/ml. Powder: dependingonthegrainsize:300g/dm 3 to1000g/dm 3 . 3.3.3 Solubilityinwater Solution: miscibleinanyproportions. Powder: miscible;maximumsolubilitydependentongrade. 3.3.4Vapour pressure Notapplicable. 3.3.5 Boilingpointat100kPa 3
39、) Morethan100CanddependingonmolecularratioSiO 2 :Na 2 O. 3.3.6 Meltingpoint Generally800C. 3.3.7Crystallisation point Anaccuratecrystallisationpointofasodiumsilicatesolutioncannotbemeasured.Byreducingthetemperatureof thesolutiontheviscosityincreases.Aprecipitateofvariablecompositionwillform,dependin
40、gonthemolecular ratioandconcentrationofthesodiumsilicate. 3.3.8Specific heat Notknown. 3.3.9 Viscosity(dynamic) Solution: 70mPa.sto90000mPa.sat20CdependingonmolecularratioSiO 2 :Na 2 Oandconcentration. Powder: 3) 100kPa=1bar. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre,
41、25 March 2004, Uncontrolled Copy, (c) BSIEN1209:2003(E) 8 not applicable. 3.3.10 Criticaltemperature Notapplicable. 3.3.11 Criticalpressure Notapplicable. 3.3.12Physical hardness Notapplicable. 3.4 Chemicalproperties Sodiumsilicatereactsasfollows: withacidsbyexothermicreaction,toformagel; with2or3va
42、lentions,toforminsolublesilicates; withcarbondioxide(CO 2 ),toformagelorprecipitate. 4 Puritycriteria 4.1General ThisEuropeanStandardspecifiestheminimumpurityrequirementsforsodiumsilicateusedforthetreatmentof waterintendedforhumanconsumption.Limitsaregivenforimpuritiescommonlypresentintheproduct. De
43、pendingontherawmaterialandthemanufacturingprocessotherimpuritiesmaybepresentand,ifso,thisshall benotifiedtotheuserandwhennecessarytorelevantauthorities. NOTE Usersofthisproductshouldsatisfythemselvesthatitisofappropriatepurityfortreatmentofwaterintendedfor humanconsumption,takingintoaccountrawwaterq
44、uality,requireddosage,contentsofotherimpuritiesandadditivesusedin theproductsnotstatedintheproductstandard,andotherrelevantfactors. Limitshavebeengivenforimpuritiesandchemicalparameterswherethesearelikelytobepresentinsignificant quantitiesfromthecurrentproductionprocessandrawmaterials.Iftheproductionprocessorrawmaterialsleadto significantquantitiesofotherimpuritiesbyproductsoradditivesbeingpresent,thisshallbenotifiedtotheuser. 4.2 Compositionofcommercialproduct Thecommercialprodu
