1、May 2015 Translation by DIN-Sprachendienst.English price group 15No 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 71
2、.100.80!%Bj-“2317110www.din.deDDIN EN 12931Chemicals used for treatment of water intended for humanconsumption Chemicals for emergency use Sodium dichloroisocyanurate, anhydrous;English version EN 12931:2015,English translation of DIN EN 12931:2015-05Produkte zur Aufbereitung von Wasser fr den mensc
3、hlichen Gebrauch Produkte fr den Notfall Natriumdichlorisocyanurat, wasserfrei;Englische Fassung EN 12931:2015,Englische bersetzung von DIN EN 12931:2015-05Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Produits chimiques utiliss en cas durgence Dichloroisocyanu
4、rate de sodium, anhydre;Version anglaise EN 12931:2015,Traduction anglaise de DIN EN 12931:2015-05SupersedesDIN EN 12931:2008-11www.beuth.deDocument comprises 31 pagesIn case of doubt, the German-language original shall be considered authoritative.05.15 DIN EN 12931:2015-05 2 A comma is used as the
5、decimal marker. National foreword This document (EN 12931:2015) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), D
6、IN-DVGW Joint Working Committee NA 119-07-04-01 UA Aufbereitungsstoffe und -anlagen. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and should note that national regulations exist in Germany dealing with water for human consumption, in part
7、icular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). The German Technical Committee also advises users of this European Standard of the fact that sodium dichloroisocyanurate is only used for military purposes by the German Federal Armed Forces and civilian use of this s
8、ubstance is permitted only in cases of defence or catastrophes under the special conditions specified there. The DIN Standards corresponding to the International Standards referred to in this document are as follows, whereby EN ISO Standards are only listed below if these have not been published as
9、DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 Amendments This standard differs from DIN EN 12931:2008-11 as follows: a) the structural formula of sodium dichloroisocyanurate has been corrected; b) specifications concerning hazard and safety related symbols have been brought in
10、line with the Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS); c) normative references have been updated. Previous editions DIN EN 12931: 2000-09, 2008-11 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specifica
11、tion and test methods Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 02 August 2013 (BGBI. (German Federal Law Gazette) I, 2013, no. 46, pp. 2977-3004), as amended by Article 4, Paragraph 22 of the Act
12、of 07 August 2013 (BGBI. I, no. 48, pp. 3154-3211). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12931 March 2015 ICS 71.100.80 Supersedes EN 12931:2008English Version Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanu
13、rate, anhydrous Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Produits chimiques utiliss en cas durgence - Dichloroisocyanurate de sodium, anhydre Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Produkte fr den Notfall - Natriumdichloriso
14、cyanurat, wasserfrei This European Standard was approved by CEN on 20 December 2014. CEN members 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 a
15、nd bibliographical references concerning such national standards may be obtained on application to 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
16、 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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugosl
17、av Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN D
18、E NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12931:2015 EEN 12931:2015 (E) 2 Contents Page Foreword 4 Introduct
19、ion .5 1 Scope 6 2 Normative references 6 3 Description .6 3.1 Identification .6 3.1.1 Chemical name .6 3.1.2 Synonym or common name 6 3.1.3 Relative molecular mass .6 3.1.4 Empirical formula.6 3.1.5 Chemical formula .7 3.1.6 CAS Registry Number .7 3.1.7 EINECS reference 7 3.2 Commercial form .7 3.3
20、 Physical properties 7 3.3.1 Appearance and odour 7 3.3.2 Density 7 3.3.3 Solubility in water 7 3.3.4 Vapour pressure 7 3.3.5 Boiling point at 100 kPa 7 3.3.6 Melting point .7 3.3.7 Specific heat .7 3.3.8 Viscosity (dynamic) .8 3.3.9 Critical temperature .8 3.3.10 Critical pressure.8 3.3.11 Physical
21、 hardness .8 3.4 Chemical properties 8 4 Purity criteria 8 4.1 General 8 4.2 Composition of commercial product .8 4.3 Impurities and main by-products .8 4.4 Chemical parameters 8 5 Test methods 9 5.1 Sampling .9 5.2 Analysis 9 5.2.1 Determination of available chlorine (main product) .9 5.2.2 Impurit
22、ies . 11 5.2.3 Chemical parameters . 13 6 Labelling - Transportation - Storage . 16 6.1 Means of delivery 16 6.2 Labelling according to the EU legislation 16 6.3 Transportation regulations and labelling . 17 6.4 Marking 17 6.5 Storage . 18 6.5.1 Long term stability 18 6.5.2 Storage incompatibilities
23、 . 18 Annex A (informative) General information on sodium dichloroisocyanurate, anhydrous 19 DIN EN 12931:2015-05 EN 12931:2015 (E) 3 A.1 Origin 19 A.1.1 Raw materials 19 A.1.2 Manufacturing process . 19 A.2 Use 19 A.2.1 Function 19 A.2.2 Form in which it is used 19 A.2.3 Treatment dose 19 A.2.4 Mea
24、ns of application . 19 A.2.5 Secondary effects 19 A.2.6 Removal of excess product 20 Annex B (normative) General rules relating to safety . 21 B.1 Rules for safe handling and use 21 B.2 Emergency procedures . 21 B.2.1 First aid . 21 B.2.2 Spillage . 21 B.2.3 Fire 22 Annex C (normative) Determination
25、 of arsenic, antimony and selenium (atomic absorption spectrometry hydride technique) 23 C.1 General principle . 23 C.2 Interferences 23 C.3 Reagents. 23 C.4 Apparatus . 25 C.5 Procedure . 26 C.5.1 Preparation of the apparatus . 26 C.5.2 Preparation of calibration solutions 27 C.5.3 Preparation of t
26、est solutions and standard solutions . 27 C.5.4 Determination of arsenic with sodium borohydride 27 C.5.5 Determination of selenium with sodium borohydride . 27 C.5.6 Determination of antimony with sodium borohydride . 28 C.6 Calculation . 28 Bibliography 29 DIN EN 12931:2015-05 EN 12931:2015 (E) 4
27、Foreword This document (EN 12931:2015) 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 b
28、y September 2015, and conflicting national standards shall be withdrawn at the latest by September 2015. This document supersedes EN 12931:2008. 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
29、responsible for identifying any or all such patent rights. Significant technical difference between this edition and EN 12931:2008 is as follows: a) deletion of reference to EU Directive 67/548/EEC of June 27, 1967 in order to take into account the latest Regulation in force (see 2); b) 6.2 updating
30、 of risk and safety labelling according to EU Regulation 2 and its latest Adaptations to Technical Progress). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
31、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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey a
32、nd the United Kingdom. DIN EN 12931:2015-05 EN 12931:2015 (E) 5 Introduction In respect of potential adverse effects 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 pr
33、oduct 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 and/or the characteristics of this product remain in force. NOTE Conformity w
34、ith 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 control by National Authorities. DIN EN 12931:2015-05 EN 12931:2015 (E) 6 1 Sc
35、ope This European Standard is applicable to sodium dichloroisocyanurate anhydrous used for emergency treatment of water intended for human consumption. It describes the characteristics of sodium dichloroisocyanurate anhydrous and specifies the requirements and the corresponding test methods for sodi
36、um dichloroisocyanurate anhydrous. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium dichloroisocyanurate anhydrous (see Annex B). 2 Normative references The following documents, in whole or in part, are normatively reference
37、d 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 any amendments) applies. EN 1233, Water quality - Determination of chromium - Atomic absorption spectro
38、metric methods EN ISO 12846, Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846) EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696) ISO 3165, Sampling of chemical products for i
39、ndustrial use Safety in sampling ISO 6206, Chemical products for 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 ISO 8288:1986, Water quality Determination of c
40、obalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods 3 Description 3.1 Identification 3.1.1 Chemical name 1-sodium - 3,5-dichloro - 1,3,5-triazine - 2,4,6-trione. 3.1.2 Synonym or common name Sodium dichloroisocyanurate. Troclosene sodium 3.1.3 Relative molecul
41、ar mass 219,98 3.1.4 Empirical formula C3N3O3Cl2Na DIN EN 12931:2015-05 EN 12931:2015 (E) 7 3.1.5 Chemical formula 3.1.6 CAS Registry Number1)2893-78-9 3.1.7 EINECS reference2)220-767-7 3.2 Commercial form The product is available in various granular forms. 3.3 Physical properties 3.3.1 Appearance a
42、nd odour The product is a white granular solid with chlorinous odour. 3.3.2 Density The bulk density of the product is approximately 0,9 g/cm3. 3.3.3 Solubility in water The solubility of the product in water is 250 g/l at 25 C. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa3)N
43、ot applicable, the product decomposes before fusion. 3.3.6 Melting point Not applicable. 3.3.7 Specific heat (1,09 0,04) kJ/kg.K at 20 C. 1)Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances. 3)100 kPa = 1 bar. DIN EN 12931:2015-05 EN 12931:20
44、15 (E) 8 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 The product is a strong oxidant, it is corrosive and hygroscopic; sodium dichloroisocyanurate decomp
45、oses into hydrochloric acid and cyanuric acid. When dissolved in an excess of water it liberates chlorine by hydrolysis. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for anhydrous sodium dichloroisocyanurate used for the treatment of water intended f
46、or human consumption. 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 the user and when necessary to relevant authorities. Users of this product should c
47、heck the national 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. Lim
48、its have been 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 shall be notified to the user. 4.2 Composition of commercial product The product shall contain at least a mass fraction of 62 % of available chlorine as calculated in accordance with the corresponding
