1、August 2013 Translation by DIN-Sprachendienst.English price group 13No 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).ICS
2、 71.100.80!%(6“2051997www.din.deDDIN EN 12175Chemicals used for treatment of water intended for humanconsumption Hexafluorosilicic acid;English version EN 12175:2013,English translation of DIN EN 12175:2013-08Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Hexafluorkieselsure;Engli
3、sche Fassung EN 12175:2013,Englische bersetzung von DIN EN 12175:2013-08Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Acide hexafluorosilicique;Version anglaise EN 12175:2013,Traduction anglaise de DIN EN 12175:2013-08SupersedesDIN EN 12175:2006-10www.beuth.deD
4、ocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.2307.13 DIN EN 12175:2013-08 2 A comma is used as the decimal marker. National foreword This document (EN 12175:2013) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretaria
5、t: (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss 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 o
6、f the European Standard and should note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). Since, as of the publication of this standard, hexafluorosilicic acid is not mentione
7、d in the list of substances for treatment 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, w
8、hereby EN ISO Standards are only listed below 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 12175:2006-10 as follows: a) specifications concerning hazard and safety related symbols have been brough
9、t in line with the “Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS)” (Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien). Previous editions DIN EN 12175: 2001-12, 2006-10 National Annex NA (informative) Bibliography DIN ISO 3696, W
10、ater for analytical laboratory use Specification 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. (German Federal Law Gazette) I, 2011, No. 61, pp. 23702396), as a
11、mended by the second Ordinance amending the Trinkwasserverordnung (TrinkwVndV 2) (German Drinking Water Ordinance) of 5 December 2011 (BGBl. (German Federal Law Gazette) I, 2012, No. 58, pp. 25622567)*)*) Obtainable from: Bundesministerium der Justiz (German Federal Ministry of Justice) (Internet: h
12、ttp:/www.gesetze-im-internet.de). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12175 May 2013 ICS 71.100.80 Supersedes EN 12175:2006English Version Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid Produits chimiques utiliss pour le traitement de l
13、eau destine la consommation humaine - Acide hexafluorosilicique Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Hexafluorkieselsure This European Standard was approved by CEN on 28 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
14、te 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 Management Centre or to any CEN member. This European Sta
15、ndard 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 same status as the official versions. CEN members are the na
16、tional 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, S
17、lovakia, 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 2013 CEN All rights of exploitation in any form and by any means reserve
18、d worldwide for CEN national Members. Ref. No. EN 12175:2013: EEN 12175:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 Normative references . 5 3 Description . 5 3.1 Identification . 5 3.2 Commercial form 6 3.3 Physical properties 6 3.4 Chemical properties . 7 4 Purity criteria 7 4
19、.1 General . 7 4.2 Composition of commercial product . 7 4.3 Impurities and main by-products 7 4.4 Chemical parameters . 8 5 Test methods 8 5.1 General . 8 5.2 Sampling . 8 5.3 Analyses . 9 6 Labelling - Transportation - Storage . 17 6.1 Means of delivery . 17 6.2 Labelling according to the EU legis
20、lation . 17 6.3 Transportation regulations and labelling 17 6.4 Marking . 18 6.5 Storage . 18 Annex A (informative) General information on hexafluorosilicic acid 19 A.1 Origin 19 A.2 Use 19 Annex B (normative) General rules relating to safety . 20 B.1 Rules for safe handling and use 20 B.2 Emergency
21、 procedures 20 Bibliography 21 DIN EN 12175:2013-08 EN 12175:2013 (E) 3 Foreword This document (EN 12175:2013) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, eithe
22、r by publication of an identical text or by endorsement, at the latest by November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and
23、/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12175:2006. Significant differences between this edition and EN 12175:2006 are as follows: The replacement of warning and safety precautions notes by labelling according to Regulation
24、 (EC) No 1272/2008. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Ma
25、cedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12175:2013-08 EN 12175:2013 (E) 4 Introduction In respect of
26、 potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this document: a) this document 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 t
27、hat, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity with this document does not confer or imply acceptance or approval of the product in any of the Member States
28、 of the EU or EFTA. The use of the product covered by this document is subject to regulation or control by National Authorities. DIN EN 12175:2013-08 EN 12175:2013 (E) 5 1 Scope This European Standard is applicable to hexafluorosilicic acid used for treatment of water intended for human consumption.
29、 It describes the characteristics of hexafluorosilicic acid and specifies the requirements and the corresponding test methods for hexafluorosilicic acid. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of hexafluorosilicic acid (see
30、Annex B). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
31、 any amendments) applies. EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696) ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 5440, Sodium hexafluorosilicate for industrial use Determination of phosphate content Molybdovanadate
32、 spectrophotometric method 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 3 Desc
33、ription 3.1 Identification 3.1.1 Chemical name Hexafluorosilicic acid. 3.1.2 Synonym or commons names Hydrofluosilicic acid. Silicate-hexafluorodihydrogen. Fluorosilicic acid. HFSA. 3.1.3 Relative molecular mass 144,09. 3.1.4 Empirical formula H2SiF6. DIN EN 12175:2013-08 EN 12175:2013 (E) 6 3.1.5 C
34、hemical formula H2SiF6.3.1.6 CAS-Registry Number1)16961-83-4. 3.1.7 EINECS reference2)241-034-8. 3.2 Commercial form The product is an aqueous solution. 3.3 Physical properties 3.3.1 Appearance and odour The product is a clear, colourless liquid with a pungent odour. 3.3.2 Density The density of a m
35、ass fraction 35 % solution at 25 C is 1,35 g/ml. The density of a mass fraction 20 % solution at 25 C is 1,18 g/ml. 3.3.3 Solubility (in water) The product is miscible in any proportion. 3.3.4 Vapour pressure The vapour pressure at 20 C is approximately 3 kPa3). 3.3.5 Boiling point at 100 kPa The pr
36、oduct boils and decomposes at 110 C. 3.3.6 Crystallisation point A solution of mass fraction of 35 % crystallises at -30 C and of a mass fraction of 20 % crystallises at -11,6 C. 3.3.7 Specific heat Not known. 3.3.8 Viscosity dynamic A solution of a mass fraction of 20 % has a dynamic viscosity of 1
37、,4 MPa.s at 25 C. 1) Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances. 3)100 kPa = 1 bar. DIN EN 12175:2013-08 EN 12175:2013 (E) 7 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness N
38、ot applicable. 3.4 Chemical properties Hexafluorosilicic acid is only stable in an aqueous solution. On evaporation, it decomposes to hydrogen fluoride (HF) and silicon tetrafluoride (SiF4). It produces hydrogen on contact with metals, e.g. steel, nickel and aluminium. It is a strong acid and reacts
39、 violently with alkalis. It forms hydrogen fluoride (HF) on contact with concentrated acids. It attacks glass. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for hexafluorosilicic acid used for the treatment of water intended for human consumption. Lim
40、its are given for impurities commonly present in the product. Depending on the raw material and the 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 regula
41、tions in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the products not stated in this document. Limits have been given for impurit
42、ies and chemicals parameters where these are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall be notified t
43、o the user. 4.2 Composition of commercial product The product shall contain between a mass fraction of 20 % and 40 % hexafluorosilicic acid, the remainder being water. The concentration of hexafluorosilicic acid shall be within 5 % of the manufacturers declared value. 4.3 Impurities and main by-prod
44、ucts The product shall conform to the requirements specified in Table 1. Table 1 Impurities Impurity Limit in mass fraction in % of commercial product Phosphate as P2O5 max.0,75 Free hydrogen fluoride as HF max. 1,5 DIN EN 12175:2013-08 EN 12175:2013 (E) 8 4.4 Chemical parameters The product shall c
45、onform to the requirements specified in Table 2. Table 2 Chemical parameters Parameter Limit mg/kg H2SiF6 (100 %) Antimony (Sb) max. 80 Arsenic (As) max. 400 Cadmium (Cd) max. 40 Chromium (Cr) max. 400 Lead (Pb) max. 400 Mercury (Hg) max. 10 Nickel (Ni) max. 400 Selenium (Se) max. 80 NOTE Other chem
46、ical parameters and indicator parameters are not relevant in hexafluorosilicic acid because the raw materials used in the manufacturing process are free of them. For parametric values of hexafluorosilicic acid on trace metal content in drinking water, see 1. 5 Test methods 5.1 General SAFETY PRECAUT
47、IONS Hexafluorosilicic acid shall be handled with extreme care, see B.1. All equipment in contact with hexafluorosilicic acid shall be made of plastics (for example polyethylene or polytetrafluoroethylene (PTFE); avoid contact with glass. 5.2 Sampling 5.2.1 General Observe the general recommendation
48、s of ISO 3165 and take account of ISO 6206. The sampling is carried out at the premises of the manufacturer of the hexafluorosilicic acid unless the customer has adequate facilities to carry out this operation safely at his own premises. 5.2.2 Sampling from drums and bottles 5.2.2.1 General 5.2.2.1.1 Mix the contents of each container to be sampled by shaking the container, by rolling it or by rocking it from side to side, taking care not to damage the container or spill any of the liq
