1、December 2013 Translation by DIN-Sprachendienst.English price group 18No 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).I
2、CS 71.100.80!%*q.“2077811www.din.deDDIN EN 901Chemicals used for treatment of water intended for humanconsumption Sodium hypochlorite;English version EN 901:2013,English translation of DIN EN 901:2013-12Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Natriumhypochlorit;Englische Fa
3、ssung EN 901:2013,Englische bersetzung von DIN EN 901:2013-12Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Hypochlorite de sodium;Version anglaise EN 901:2013,Traduction anglaise de DIN EN 901:2013-12SupersedesDIN EN 901:2013-08www.beuth.deDocument comprises 2
4、pagesIn case of doubt, the German-language original shall be considered authoritative.411.13DIN EN 901:2013-12 2 A comma is used as the decimal marker. National foreword This document (EN 901:2013) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The r
5、esponsible 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 of the European Standard and should not
6、e that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). The DIN Standards corresponding to the International Standards referred to in this document are as follows, whereby EN ISO
7、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 ISO 5725-2 DIN ISO 5725-2 Amendments This standard differs from DIN EN 901:2007-06 as follows: a) specifications concerning hazard and safety related symbols have b
8、een brought in line with the “Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS)” (Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien). b) normative references have been updated. Compared with DIN EN 901:2013-08, the following correcti
9、ons have been made to the German version only and therefore do not affect the English text: c) in Subclause 4.2, first sentence, “je Liter” after “18 % Aktivchlor” (18 % active chlorine) has been deleted; d) in the head of Table 2, third column, “NaClO” has been changed to read “NaClO3”; e) in Subcl
10、ause C.3.11, first indent, the value of the arsenic pentoxide to be dissolved, “1,543 g”, has been corrected to read “1,534 g”. Previous editions DIN 19608: 1959-02, 1969-05, 1976-06 DIN EN 901: 2000-03, 2007-06, 2013-08 DIN EN 901:2013-12 3 National Annex NA (informative) Bibliography DIN ISO 3696,
11、 Water for analytical laboratory use Specification and test methods DIN ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method Verordnung ber die Qualitt von Was
12、ser 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. 2370-2396), as amended by the second Ordinance amending the Trinkwasserverordnung (TrinkwVndV 2) (German Drinking W
13、ater Ordinance) of 5 December 2011 (BGBl. (German Federal Law Gazette) I, 2012, No. 58, pp. 2562-2567)*)*)Obtainable from: Bundesministerium der Justiz (German Federal Ministry of Justice) (Internet: http:/www.gesetze-im-internet.de). DIN EN 901:2013-12 4 This page is intentionally blank EUROPEAN ST
14、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 901 May 2013 ICS 71.100.80 Supersedes EN 901:2007English Version Chemicals used for treatment of water intended for human consumption - Sodium hypochlorite Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Hypochlorite d
15、e sodium Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Natriumhypochlorit This European Standard was approved by CEN on 21 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
16、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 Standard exists in three official versions (English, French
17、, 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 national standards bodies of Austria, Belgium, Bulgaria, C
18、roatia, 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 an
19、d 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 reserved worldwide for CEN national Members. Ref. No. EN 901:20
20、13: EEN 901:2013 (E) 2 Contents Page Foreword . 4 Introduction 5 1 Scope 6 2 Normative references . 6 3 Description . 6 3.1 Identification . 6 3.2 Commercial form 7 3.3 Physical properties 7 3.4 Chemical properties . 8 4 Purity criteria 8 4.1 General . 8 4.2 Composition of commercial product . 8 4.3
21、 Impurities and main by-products 8 4.4 Chemical parameters . 9 5 Test methods 9 5.1 Sampling . 9 5.2 Analysis 9 6 Labelling - transportation - storage . 20 6.1 Means of delivery . 20 6.2 Labelling according to the EU legislation 20 6.3 Transportation regulations and labelling 21 6.4 Marking . 21 6.5
22、 Storage . 22 Annex A (informative) General information on sodium hypochlorite . 23 A.1 Origin 23 A.2 Use 23 Annex B (normative) General rules relating to safety . 24 B.1 Rules for safe handling and use 24 B.2 Emergency procedures 24 Annex C (normative) Determination of arsenic, antimony and seleniu
23、m (atomic absorption spectrometry hydride technique) 25 C.1 General principle 25 C.2 Interferences 25 C.3 Reagents . 25 C.4 Apparatus . 27 C.5 Procedure . 29 C.6 Calculation 30 Annex D (normative) Determination of bromate ion content in sodium hypochlorite by liquid chromatography of ions and UV det
24、ection . 31 D.1 General . 31 D.2 Interferences 31 D.3 Principle 31 D.4 Reagents . 31 D.5 Apparatus . 33 D.6 Procedure . 33 DIN EN 901:2013-12 EN 901:2013 (E) 3 Annex E (informative) Results of inter-laboratory tests on sodium bromate determination in sodium hypochlorite commercial solutions 36 Annex
25、 F (informative) Environmental, health and safety precautions within chemical laboratories 37 Bibliography 38 DIN EN 901:2013-12 EN 901:2013 (E) 4 Foreword This document (EN 901:2013) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This
26、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 November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn to the possibility that some of t
27、he 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 901:2007. Significant technical differences between this edition and EN 901:2007 are as follows: replacement o
28、f warning and safety precautions notes by labelling according to Regulation (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
29、, 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 and the United K
30、ingdom. DIN EN 901:2013-12 EN 901:2013 (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 regarding whether the product may be use
31、d 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 with this Europea
32、n Standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. Use of the product covered by this European Standard is subject to regulation or control by National Authorities. This product is a biocide and should comply with the relevant leg
33、islation in force. In the European Union, at the time of publication, this legislation is Directive 1998/8/EC 1. DIN EN 901:2013-12 EN 901:2013 (E) 6 1 Scope This European Standard is applicable to sodium hypochlorite used for treatment of water intended for human consumption. It describes the chara
34、cteristics of sodium hypochlorite and specifies the requirements and the corresponding test methods for sodium hypochlorite. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B). NOTE While this standa
35、rd is not applicable to sodium hypochlorite generated in-situ (see bibliographic reference 7), the limits for impurities and chemical parameters apply. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its appli
36、cation. 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 spectrometric methods EN ISO 3696:1995, Water for analytical labo
37、ratory use Specification and test methods (ISO 3696:1987) 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 pr
38、oducts for industrial use Sampling Vocabulary ISO 8288:1986, Water quality Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods 3 Description 3.1 Identification 3.1.1 Chemical name Sodium hypochlorite. 3.1.2 Synonym or common names Liquid blea
39、ch, soda bleach, bleach lye. 3.1.3 Relative molecular mass 74,44. 3.1.4 Empirical formula NaClO. 3.1.5 Chemical formula NaClO. DIN EN 901:2013-12 EN 901:2013 (E) 7 3.1.6 CAS Registry Number 1)7681-52-9. 3.1.7 EINECS reference 2)231-668-3. 3.2 Commercial form The product is supplied as an aqueous sol
40、ution with an available (active) chlorine concentration up to a mass fraction of 18 %. 3.3 Physical properties 3.3.1 Appearance and odour The product is a clear yellowish-green solution with a faint chlorinous odour. 3.3.2 Density The density of the product varies between 1,13 g/ml and 1,30 g/ml at
41、20 C. 3.3.3 Solubility in water The product is capable of being mixed with water in any proportion. 3.3.4 Vapour pressure Approximately 2,5 kPaat 20 C. 3.3.5 Boiling point at 100 kPa 3)Not applicable. 3.3.6 Crystallisation and freezing point At about 10 C crystallisation of NaOCl . 6 H2O starts. Fre
42、ezing of the concentrated product takes place between - 20 C and - 30 C. 3.3.7 Specific heat The specific heat is 3,48 kJ/(kg.K) for a solution with an available active chlorine concentration of mass fraction between 14 % and 15 %. 3.3.8 Viscosity (dynamic) 2,6 mPa.s at 20 C. 1) Chemical Abstracts S
43、ervice Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. DIN EN 901:2013-12 EN 901:2013 (E) 8 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
44、product is an alkaline solution with a pH value greater than 11 at 20 C. It reacts with acids and acidic salts to form chlorine. Vigorous reactions occur with reducing chemicals. It is a strong oxidant (ERedfor (ClO-) = 0,89 V). ClO- + 2H+ +2e - Cl - + H2O 4 Purity criteria 4.1 General This European
45、 Standard specifies the minimum purity requirements for sodium hypochlorite used for treating water intended for 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
46、, the user, and when necessary the relevant authorities, shall be notified. Users of the product should check the national regulations to clarify whether it is of appropriate purity for treating water intended for human consumption, taking into account raw water quality, required dosage, contents of
47、 other impurities and additives used in the product that are 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 from the current production process and raw materials. If the production proc
48、ess or the raw materials bring about the presence of significant amounts of impurities, by-products or additives, the user shall be notified. 4.2 Composition of commercial product Sodium hypochlorite is available only in solutions with concentrations up to 18 % active chlorine at the time of deliver
49、y by the producer. Common concentrated products contain a minimum of 12 % active chlorine. Diluted solutions are also available. The concentration of sodium hypochlorite shall be equal to or greater than the value specified by the manufacturer. 4.3 Impurities and main by-products The product contains sodium chloride (NaCl) in equimolar amounts at minimum, and a small portion of sodium hydroxide (NaOH) which keeps the product alkaline. Thus a little amount of sodium carbonate (Na2CO3) can be present, too. DIN E
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