1、January 2013 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 71.100.80!$uX“1938253www.din.deDDIN EN 12173Chemicals used for treatment of water intended for humanconsumption Sodium fluoride;English version EN 12173:2012,English translation of DIN EN 12173:2013-01Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Natriumfluorid;Englische Fassun
3、g EN 12173:2012,Englische bersetzung von DIN EN 12173:2013-01Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Fluorure de sodium;Version anglaise EN 12173:2012,Traduction anglaise de DIN EN 12173:2013-01SupersedesDIN EN 12173:2005-09www.beuth.deDocument comprises
4、pagesIn case of doubt, the German-language original shall be considered authoritative.2001.13DIN EN 12173:2013-01 2 A comma is used as the decimal marker. National foreword This document (EN 12173:2012) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France).
5、The responsible German body involved in its preparation was the Normen-ausschuss Wasserwesen (Water Practice Standards Committee), Working Committee NA 119-04-02 AA Wasseraufbereitung. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and shou
6、ld note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV2001) (German Drinking Water Ordinance). Since, as of the publication of this standard, sodium floride is not mentioned in the list of substances for treatment
7、 and disinfection of water in accordance with article 11 of the Trinkwasserverordnung 2001, it shall not be used for the treatment of drinking water. The DIN Standards corresponding to the International Standards referred to in this document are as follows, whereby EN ISO Standards are only listed b
8、elow if these have not been published as DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 Amendments This standard differs from DIN EN 12173:2005-09 as follows: a) specifications concerning hazard and safety related symbols have been brought in line with the “Globally Harmonized S
9、ystem of Classification, Labelling and Packaging of Chemicals (GHS)” (Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien). Previous editions DIN EN 12173: 1998-12, 2005-09 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specif
10、ication and test methods Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 28 November 2011 (BGBI. I p. 2370), as amended by Article 2, Paragraph 19 of the Act of 22 December 2011 (BGBI. I p. 3044)*). *) R
11、egistered in the DITR database of DIN Software GmbH, obtainable from: Beuth Verlag GmbH, 10772 Berlin. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12173 October 2012 ICS 71.100.80 Supersedes EN 12173:2005English Version Chemicals used for treatment of water intended for human consumption -
12、Sodium fluoride Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Fluorure de sodiumProdukte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Natriumfluorid This European Standard was approved by CEN on 23 September 2012. CEN members are bound to compl
13、y with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
14、Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the sam
15、e status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
16、 Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All ri
17、ghts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12173:2012: EEN 12173:2012 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative references 53 Description . 54 Purity criteria 75 Test methods 86 Labelling - Transportation - Stor
18、age 13Annex A (informative) General information on sodium fluoride 16Annex B (normative) General rules relating to safety . 17Bibliography 18DIN EN 12173:2013-01 EN 12173:2012 (E) 3 Foreword This document (EN 12173:2012) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secreta
19、riat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to
20、 the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12173:2005. The significant technical differences between this edition and EN 1
21、2173:2005 are as follows: Modification of 6.2 on labelling, deletion of the reference to EU Directive 80/778/EEC of 15 July 1980 in order to take account of the latest Directive in force. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countri
22、es are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
23、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12173:2013-01 EN 12173:2012 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption caused by the product covered by this European Sta
24、ndard: a) this European Standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use
25、and/or the characteristics of this product remain in force. NOTE Conformity with this European Standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or c
26、ontrol by National Authorities. DIN EN 12173:2013-01 EN 12173:2012 (E) 5 1 Scope This European Standard is applicable to sodium fluoride used for treatment of water intended for human consumption. It describes the characteristics of sodium fluoride and specifies the requirements and the correspondin
27、g test methods for sodium fluoride. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use (see Annex B). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable
28、 for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696) ISO 2831, Sodium fluoride f
29、or industrial use Determination of water-insoluble matter ISO 2832, Sodium fluoride for industrial use Determination of moisture content ISO 2833, Sodium fluoride for industrial use Determination of fluorine content Modified Willard-Winter-method ISO 3165, Sampling of chemical products for industria
30、l use Safety in sampling ISO 5993, Sodium hydroxide for industrial use Determination of mercury content Flameless atomic absorption spectrometric method ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 6353-1, Reagents for chemical analysis Part 1: General test methods ISO 8213
31、, Chemical products for industrial use Sampling techniques Solid chemical products in the form of particles varying from powders to coarse lumps 3 Description 3.1 Identification 3.1.1 Chemical name Sodium fluoride. 3.1.2 Synonym or commons name Sodium fluoride. 3.1.3 Relative molecular mass 42. 3.1.
32、4 Empirical formula NaF. DIN EN 12173:2013-01 EN 12173:2012 (E) 6 3.1.5 Chemical formula NaF.3.1.6 CAS-Registry Number 1)7681-49-4. 3.1.7 EINECS reference 2)231-667-8. 3.2 Commercial form The product is a solid (crystals or powder). 3.3 Physical properties 3.3.1 Appearance and odour The product is a
33、 colourless fine crystalline odourless powder or crystals. 3.3.2 Density The density of the crystals is 2,8 g/cm3at 20 C. The bulk density of the product is 0,6 g/cm3to 1,4 g/cm3at 20 C. 3.3.3 Solubility (in water) The solubility of the product in water is 40 g/l at 20C. 3.3.4 Vapour pressure Not ap
34、plicable. 3.3.5 Boiling point at 100 kPa 3)The product boils at approximately 1 700 C. 3.3.6 Crystallisation point The product melts at approximately 988 C. 3.3.7 Specific heat Not known. 1) Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances.
35、3)100 kPa = 1 bar. DIN EN 12173:2013-01 EN 12173:2012 (E) 7 3.3.8 Viscosity dynamic Not applicable. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Sodium fluoride releases hydrogen fluoride when in
36、contact with acids. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for sodium fluoride used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and th
37、e manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. Users of this product should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for h
38、uman consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the products not stated in this product standard. Limits have been given for impurities and chemical parameters where these are likely to be present in significant quantities
39、from the current production process and raw materials. If the production process or raw materials leads to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product The content of sodium fluoride shall not
40、be less than a mass fraction of 98 % (NaF). The concentration of sodium fluoride shall be within 5 % of the manufacturers declared value. 4.3 Impurities and main by-products The product shall conform to the requirements specified in Table 1. Table 1 Impurities Impurity Limit in mass fraction in % of
41、 commercial product Water-insoluble matter max 0,5 Moisture max 0,5 DIN EN 12173:2013-01 EN 12173:2012 (E) 8 4.4 Chemical parameters The product shall conform to the requirements specified in Table 2. Table 2 Chemical parameters Parameter Limit mg/kg of commercial product Antimony (Sb) max 1 Arsenic
42、 (As) max 5 Cadmium (Cd) max 0,1 Chromium (Cr) max 4 Lead (Pb) max 4 Mercury (Hg) max 0,1 Nickel (Ni) max 4 Selenium (Se) max 1 NOTE Other chemical parameters and indicator parameters are not relevant in sodium fluoride because the raw materials used in the manufacturing process are free of them. Fo
43、r parametric values of sodium fluoride on trace metal content in drinking water, see 1. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. 5.2 Analyses 5.
44、2.1 General All reagents shall be of a recognised analytical grade and the water used shall conform to the grade 3 specified in EN ISO 3696. 5.2.2 Main product The mass fraction of fluorine (C1) in % shall be determined in accordance with ISO 2833. The sodium fluoride content, C2, expressed as mass
45、fraction in % is given by the following formula: C2= C1x 2,2101 (1) DIN EN 12173:2013-01 EN 12173:2012 (E) 9 5.2.3 Impurities 5.2.3.1 Water-insoluble matter The content of insoluble matter shall be determined in accordance with ISO 2831. 5.2.3.2 Moisture The content of moisture shall be determined i
46、n accordance with ISO 2832. 5.2.4 Chemical parameters 5.2.4.1 General The content of chemical parameters shall be determined using the procedures specified in Table 3. Table 3 Procedures for the determination of chemical parameters Element Reference Method Wavelength nm Flame As see 5.2.4.3 Hydride
47、AAS 193,7 n.a. Sb see 5.2.4.3 Hydride AAS 217,6 n.a. Cd ISO 6353-1 GM 29 See 5.2.4.2 AAS 228,8 air-acetylene Cr ISO 6353-1 GM 29 See 5.2.4.2 AAS 357,8 air-acetylene Pb ISO 6353-1 GM 29 See 5.2.4.2 AAS 217,0 or 283,3 air-acetylene Ni ISO 6353-1 GM 29 See 5.2.4.2 AAS 232,0 oxidising air-acetylene Se s
48、ee 5.2.4.3 Hydride AAS 196,0 n.a. Hg in accordance with ISO 5993 flameless AAS 253,6 n.a. AAS = Atomic absorption spectrometry n.a. = not applicable. 5.2.4.2 Determination of cadmium (Cd), chromium (Cr), lead (Pb) and nickel (Ni) 5.2.4.2.1 General The content of Cd, Cr, Pb and Ni shall be determined
49、 taking into account ISO 6353-1, modified as described in 5.2.4.2.2. 5.2.4.2.2 Procedure The elements Cd, Cr, Pb and Ni shall be determined using the standard addition method. The reference solutions shall be made by spiking the sample with standard solutions, which contain stepwise increasing contents of the elements to be determined. The amount of internal standard to be added can be estimated from a preliminary investigation, determining roughly the element content of the
