1、January 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).IC
2、S 71.100.80!$uV“1938251www.din.deDDIN EN 15028Chemicals used for treatment of water intended for humanconsumption Sodium chlorate;English version EN 15028:2012,English translation of DIN EN 15028:2013-01Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Natriumchlorat;Englische Fassun
3、g EN 15028:2012,Englische bersetzung von DIN EN 15028:2013-01Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Chlorate de sodium;Version anglaise EN 15028:2012,Traduction anglaise de DIN EN 15028:2013-01SupersedesDIN EN 15028:2006-06www.beuth.deDocument comprises
4、23 pagesIn case of doubt, the German-language original shall be considered authoritative.01.13DIN EN 15028:2013-01 2 A comma is used as the decimal marker. National foreword This document (EN 15028:2012) 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 sho
6、uld 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 chlorate is not mentioned in the list of substances for treatme
7、nt 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
8、 below if these have not been published as DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 Amendents This standard differs from DIN EN 15028:2006-06 as follows: a) specifications concerning hazard and safety related symbols have been brought in line with the “Globally Harmonized
9、System of Classification, Labelling and Packaging of Chemicals (GHS)” (Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien). Previous editions DIN EN 15028: 2006-06 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specification
10、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)*). *) Obtainabl
11、e from: Bundesministerium der Justiz (German Federal Ministry of Justice) (Internet: http:/www.gesetze-im-internet.de). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15028 November 2012 ICS 71.100.80 Supersedes EN 15028:2006English Version Chemicals used for treatment of water intended for hu
12、man consumption - Sodium chlorate Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Chlorate de sodiumProdukte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Natriumchlorat This European Standard was approved by CEN on 16 September 2012. CEN members
13、are bound to comply 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 t
14、o the CEN-CENELEC 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
15、Centre has the same 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, Lith
16、uania, Luxembourg, 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 Brusse
17、ls 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15028:2012: EEN 15028:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Description .54 Purity criteria 85 Test methods 96 Labelling - trans
18、portation - storage 15Annex A (informative) General information on sodium chlorate . 18Annex B (normative) General rules relating to safety 19Annex C (informative) Environmental, health and safety precautions within chemical laboratory 20Bibliography . 21DIN EN 15028:2013-01 EN 15028:2012 (E) 3 Fore
19、word This document (EN 15028:2012) 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, either by publication of an identical text or by endorsement, at the latest by Ma
20、y 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to 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 right
21、s. This document supersedes EN 15028:2006. Significant technical differences between this edition and EN 15028:2006 are as follows: a) 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. Acc
22、ording 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 Macedonia, France, German
23、y, 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 15028:2013-01 EN 15028:2012 (E) 4 Introduction In respect of potential adverse effe
24、cts on the quality of water intended for human consumption, caused by the product covered by this European Standard: 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,
25、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 European Standard does not confer or imply acceptance or approval of the product in any of the Member St
26、ates of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by national authorities. DIN EN 15028:2013-01 EN 15028:2012 (E) 5 1 Scope This European Standard is applicable to sodium chlorate used for treatment of water intended for human consum
27、ption. It describes the characteristics of sodium chlorate and specifies the requirements and the corresponding test methods for sodium chlorate. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium chlorate (see Annex B) and gi
28、ves the environmental, health and safety precautions within chemical laboratory (see Annex C). 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 appl
29、ies. 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) EN ISO 11885, Water quality Determination of selected elements by inductively coupled plasma optic
30、al emission spectrometry (ICP-OES) (ISO 11885) EN ISO 12846, Water quality Determination of mercury Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846) ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for
31、industrial use Sampling Vocabulary ISO 8213, 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 chlorate 3.1.2 Synonym or common names None (for the
32、 processes related to treatment of drinking water) NOTE Commercial names of formulations might exist. Purity needs to be checked in case of use for treatment of water. 3.1.3 Relative molecular mass 106,45 3.1.4 Empirical formula NaClO3DIN EN 15028:2013-01 EN 15028:2012 (E) 6 3.1.5 Chemical formula N
33、aClO33.1.6 CAS Registry Number 1)7775-09-9 3.1.7 EINECS reference 2)231-887-4 3.2 Commercial form Sodium chlorate is commercially available in crystalline form or as a powder and as an aqueous solution. 3.3 Physical properties 3.3.1 Appearance and odour The product is a colourless solid as a powder
34、or the product is a faint blue to colourless solution. 3.3.2 Density The density of an aqueous solution of sodium chlorate is given in Table 1. Table 1 Density of sodium chlorate solution Concentration of aqueous solution of sodium chlorate solution (Mass fraction in %) Density (g/ml at 20 C) 30 1,2
35、440 1,3350 1,443.3.3 Solubility in water The solubility of sodium chlorate in water is given in Table 2. Table 2 Solubility of sodium chlorate Temperature (C) Solubility (g/l) 10 65020 70040 78060 8801)Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical S
36、ubstances. DIN EN 15028:2013-01 EN 15028:2012 (E) 7 3.3.4 Vapour pressure Not applicable (thermal decomposition occurs at 400 C) 3.3.5 Boiling point at 100 kPa 3)The boiling point of aqueous solutions of sodium chlorate is given in Table 3. Table 3 Boiling point at 100 kPaof aqueous solutions of sod
37、ium chlorate Concentration of aqueous solution of sodium chlorate (g NaClO3/kg of saturated solution) 400 450 500 550 600 650 700Boiling point (C) 106 107 109 110 111 113 1163.3.6 Crystallisation The crystallisation point of aqueous solutions of sodium chlorate depending on concentration in water is
38、 given in Table 4. Table 4 Crystallisation point of sodium chlorate aqueous solutions Concentration of aqueous solution of sodium chlorate (mass fraction in %) Crystallisation point (C) 40 -20 45 0 50 20 55 3260 553.3.7 Melting point The melting point (of the solid) is 248 C; and the thermal decompo
39、sition is at 400 C. 3.3.8 Viscosity (dynamic) The relative viscosity of aqueous solutions of mass fraction of 40 % of sodium chlorate compared with water at the same temperature between 25 C and 35 C is 2,07. 3.3.9 Critical temperature in aqueous solution Not applicable. 3.3.10 Critical pressure Not
40、 applicable. 3)100 kPa = 1 bar. DIN EN 15028:2013-01 EN 15028:2012 (E) 8 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties The sodium chlorate is a strong oxidising agent. NOTE 1 When an acidic sodium chlorate solution is treated with a reducing agent (e.g. hydrogen peroxide (EN 902)
41、or oxalic acid), chlorine dioxide can be formed. NOTE 2 The formation of chlorine dioxide can also be obtained by acidification if the acid applied is capable of acting as a reducing agent in the current environment. For the purpose of drinking water treatment one should use acids of quality in acco
42、rdance with existing standards for the purpose: hydrochloric acid (EN 939); sulfuric acid (EN 899); phosphoric acid (EN 974). 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for sodium chlorate used for the treatment of water intended for human consumpt
43、ion. Limits 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 be user and when necessary to relevant authorities. NOTE Users of this product should check the nati
44、onal regulations 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 product not stated in this product standard. Limits have been
45、 given for impurities and chemical 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 sh
46、all be notified to the user. 4.2 Composition of commercial product The sodium chlorate is commercially available as solid forms usually with a minimum dry mass fraction of 99 % of NaClO3. Commercial solutions if used for water treatment shall be certified to be made-up on the basis of the product wi
47、th a dry mass fraction of 99 %. No additional substances like colorants shall be added to the basic product or to the solutions. The content of sodium chlorate in commercially available solutions shall be within 3 % of the manufacturers declared value. 4.3 Impurities and main by-products NOTE Sodium
48、 chlorate in crystalline form contains normally a maximum mass fraction of 0,1 % of sodium chloride (as NaCl). 4.4 Chemical parameters The product shall conform to the requirements specified in Table 5. DIN EN 15028:2013-01 EN 15028:2012 (E) 9 Table 5 Chemical parameters Parameter Limit in sodium ch
49、lorate (mass fraction 100 %) (mg/kg) Arsenic (As) max. 1 Cadmium (Cd) max. 1 Chromium (Cr) max. 5 Mercury (Hg) max. 1 Nickel (Ni) max. 1 Lead (Pb) max. 1 Antimony (Sb) max. 1 Selenium (Se) max. 1 NOTE Cyanide which does not exist in a strong oxidising medium such as sodium chlorate is not a relevant chemical parameter. Pesticides and polycyclic aromatic hydrocarbons are not by-products of the manufacturing process. For parametric values of sodium chlorate on trace metal co
