1、February 2015 Translation by DIN-Sprachendienst.English price group 11No 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!%“2296158www.din.deDDIN EN 15074Chemicals used for treatment of swimming pool water Ozone;English version EN 15074:2014,English translation of DIN EN 15074:2015-02Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser Ozon;Englische Fassung EN 15074:2014,Englische bersetzung von DI
3、N EN 15074:2015-02Produits chimiques utiliss pour le traitement de leau des piscines Ozone;Version anglaise EN 15074:2014,Traduction anglaise de DIN EN 15074:2015-02SupersedesDIN EN 15074:2006-08www.beuth.deDocument comprises 19 pagesIn case of doubt, the German-language original shall be considered
4、 authoritative.01.15DIN EN 15074:2015-02 2 A comma is used as the decimal marker. National foreword This document (EN 15074:2014) 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-Norme
5、nausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-07-04-01 UA Aufbereitungsstoffe und -anlagen. 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
6、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 15074:2006-08 as follows: a) a NOTE referring to the new EU Biocides Regulation has been added; b) the content of Clause 3 “Description” and Clause 5 “Test meth
7、ods” has been adopted from DIN EN 1278 and normative references to that document have been deleted; c) Clause 6 “Labelling Transportation Storage” has been aligned with DIN EN 1278 and reference to the relevant Regulation (EC) has been updated; d) a Bibliography has been added. Previous editions DIN
8、 EN 15074: 2006-08 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specification and test methods EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15074 November 2014 ICS 71.100.80 Supersedes EN 15074:2006English Version Chemicals used for treatment
9、 of swimming pool water - Ozone Produits chimiques utiliss pour le traitement de leau des piscines - Ozone Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Ozon This European Standard was approved by CEN on 29 September 2014. CEN members are bound to comply with the CEN/CENELEC Internal
10、 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 Management Centre or to any CEN
11、 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 same status as the official versio
12、ns. 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, Malta, Netherlands, Norway, Po
13、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitatio
14、n in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15074:2014 EEN 15074:2014 (E) 2 Contents Page Foreword 4 Introduction .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 Relat
15、ive molecular mass .6 3.1.4 Empirical formula.6 3.1.5 Chemical formula .6 3.1.6 CAS Registry Number .6 3.1.7 EINECS reference 6 3.2 Commercial form .6 3.3 Physical properties 6 3.3.1 Appearance 6 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 8 3.3
16、.6 Melting point .8 3.3.7 Specific heat (liquid) 8 3.3.8 Viscosity (dynamic) .8 3.3.9 Critical temperature .8 3.3.10 Critical pressure.8 3.3.11 Physical hardness .8 3.4 Chemical properties 8 4 Purity criteria 9 4.1 Composition of product 9 4.2 Impurities and main by-products .9 5 Test methods 9 5.1
17、Sampling .9 5.2 Analyses 10 5.2.1 General . 10 5.2.2 Principle . 10 5.2.3 Reagents 10 5.2.4 Apparatus 11 5.2.5 Procedure 11 5.2.6 Expression of results . 11 5.2.7 Accuracy 11 5.2.8 Precautions . 12 6 Labelling - Transportation - Storage . 12 6.1 Labelling 12 6.2 Risk and safety labelling according t
18、o the EU Legislation 12 6.3 Transportation regulations and labelling . 12 6.4 Marking 12 6.5 Material acceptable for contact with ozone . 12 6.6 Stability 12 DIN EN 15074:2015-02 EN 15074:2014 (E) 3 Annex A (informative) General information on ozone . 14 Annex B (normative) General rules relating to
19、 safety . 16 Bibliography 17 DIN EN 15074:2015-02 EN 15074:2014 (E) 4 Foreword This document (EN 15074:2014) 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
20、by publication of an identical text or by endorsement, at the latest by May 2015, and conflicting national standards shall be withdrawn at the latest by May 2015. 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
21、shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15074:2006. Significant technical difference between this edition and EN 15074:2006 is as follows: copy of Clause 3, Description, and Clause 5, Test methods, from EN 1278:2010 1; updating of Subc
22、lause 6.2 in line with current legislation. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former
23、 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 Kingdom. DIN EN 15074:2015-02 EN 15074:2014 (E) 5 In
24、troduction In respect of potential adverse effects on the quality of water for swimming pools, caused by the product covered by this European Standard: a) this European Standard provides no information as to whether the products may be used without restriction in any of the Member States of the EU o
25、r 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 these products remain in force. NOTE 1 Conformity with the European Standard does not confer or imply acceptance or approval
26、 of the products 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. NOTE 2 Ozone is a biocide product according to the regulation (EU) No 528/2012 of the European Parliament and of the C
27、ouncil of 22 May 2012 concerning the making available on the market and use of biocidal products. DIN EN 15074:2015-02 EN 15074:2014 (E) 6 1 Scope This European Standard is applicable to ozone used for treatment of water for swimming pools. It describes the composition of ozone. It gives information
28、 on its use in swimming pool 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 for its application. For dated references
29、, 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) 3 Description 3.1 Identification 3.1.1 Chemical name Ozone. 3.1.2 S
30、ynonym or common name None (has sometimes been called improperly “allotropic oxygen”). 3.1.3 Relative molecular mass 48. 3.1.4 Empirical formula O3. 3.1.5 Chemical formula O3. 3.1.6 CAS Registry Number1)10028-15-6. 3.1.7 EINECS reference2)Not applicable. 3.2 Commercial form Ozone is generated on or
31、near the site of use. 3.3 Physical properties 3.3.1 Appearance 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. DIN EN 15074:2015-02 EN 15074:2014 (E) 7 Bluish gas; the liquid is dark blue. NOTE A weak absorption in the visual range bet
32、ween 435 nm and 475 nm. 3.3.2 Density Gas: 2,144 kg/m3at NTP (Normal Temperature Pressure, 273 K and 101,3 kPa); liquid: 1,574 g/ml at 183 C; solid: 1,728 g/cm3. 3.3.3 Solubility in water In pure water, the solubility values (S) expressed in grams per cubic meter water per (grams per cubic meter) ga
33、s at 101,3 kPa are given in Table 1. Table 1 Solubility in water Temperature of water Solubility C S, in: gasm/gOHm/g3230 0,64 5 0,5 10 0,39 15 0,31 20 0,24 25 0,19 30 0,15 35 0,12 NOTE 1 Recent surveys of literature data are given in Bibliography. See 2, 3 and 4. NOTE 2 S is a ratio, not an absolut
34、e concentration. 3.3.4 Vapour pressure The vapour pressure of ozone depending on temperature is given in Table 2. DIN EN 15074:2015-02 EN 15074:2014 (E) 8 Table 2 Vapour pressure Temperature Vapour pressure C kPa - 183 0,014 7 - 180 0,028 - 170 0,188 - 160 0,897 - 150 3,306 - 140 9,892 - 130 25,331
35、- 120 56,928 - 110 115,322 - 100 2 139,079 3.3.5 Boiling point at 100 kPa3) 112 C. NOTE Vaporization heat: 681 kJ/m3at NTP. 3.3.6 Melting point 196 C. 3.3.7 Specific heat (liquid) Not applicable. 3.3.8 Viscosity (dynamic) 0,004 2 Pa.s at 195 C; 0,001 55 Pa.s at 183 C. 3.3.9 Critical temperature 12,1
36、 C. 3.3.10 Critical pressure 5 460 kPa. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Ozone is a powerful oxidant. The standard redox potentials (25 C) are: 3) 100 kPa = 1 bar. DIN EN 15074:2015-02 EN 15074:2014 (E) 9 (HEO-values in volts): O3+ 2H+ 2e- O2+ H2O HEO= 2,07 V (1) O3+
37、H2O + 2e- O2+ 2OH-HEO= 1,24 V (2) OH + H+ e- H2O HEO= 2,42 V (calculated value) (3) If the pH increases by one unit, the EH-values shall decrease by 30 mV per electron transferred. At 100 kPa and 25 C and pH = 7 the EH-values, versus the normal hydrogen electrode, become: O3(1) = 1,66 V; O3(2) = 0,8
38、2 V; OH (3) = 2,21 V. In water treatment most of the direct reactions of ozone are dipolar cyclo-additions and electrophilic substitution reactions. Moreover ozone, in water, can generate radicals such as OH: (O3+ H2O 2 OH + O2). The OH radical is a strong general oxidant. 4 Purity criteria 4.1 Comp
39、osition of product Typical concentrations obtainable in air are in the range of 15 g/m3to 45 g/m3at Normal Temperature and Pressure, 273 K and 101,3 kPa (NTP). The ozone concentration obtained under specified operating conditions shall be equal to or greater than the value declared by the manufactur
40、er of the ozone generator. 4.2 Impurities and main by-products Traces of nitrogen oxides can be formed during ozone generation. 5 Test methods 5.1 Sampling Ozone generation is usually based on a continuous process gas flow mode positive pressure. Sampling of a volume is to be controlled with a total
41、izing volumetric flow meter, the volumes being expressed at Normal Temperature and Pressure (NTP). In continuous monitoring methods the gas exit shall be open to ambient air or the gas pressure shall be controlled and the results corrected for effects of pressure. Sampling lines shall be in stainles
42、s steel or in polyfluorocarbone material resistant to ozone. The transfer of the gas from the sampling point to the analyser shall be kept shorter than 1 min. Expression of concentrations: concentration of ozone in a gas in g/m3(NTP), or kg/m3(NTP), and for traces in cm3/m3(equivalent to ppm as volu
43、me fraction). NOTE 1 1 g/m3(NTP) equals 466,4 106(volume fraction) and 0,069 9 % (mass fraction) in oxygen or 0,077 3 % (mass fraction) in air. DIN EN 15074:2015-02 EN 15074:2014 (E) 10 NOTE 2 At conventional concentrations of about 20 g/m3(NTP), the effect of difference in gas densities between ozo
44、ne and oxygen-nitrogen is negligible. This is not the case when higher ozone concentrations are generated, i.e. in oxygen. 5.2 Analyses 5.2.1 General The present method concerns the determination of ozone in air, oxygen or other process gases. The method is directly applicable for ozone concentratio
45、ns in the range of 1 g/m3to 200 g/m3(NTP). 5.2.2 Principle Direct iodometric titration. 5.2.3 Reagents All reagents shall be of a recognized analytical grade and the water used shall conform to grade 2 in accordance with EN ISO 3696. 5.2.3.1 Potassium iodide (KI) buffered solution. Potassium iodide
46、(KI) solution at 20 g/l with sodium hydrogen phoshate (Na2HPO4.2 H2O) solution at 7,3 g/l and potassium dihydrogen phosphate (KH2PO4) solution at 3,5 g/l. 5.2.3.2 Sodium thiosulfate: standard volumetric, solution c(Na2S2O3) = 0,1 mol/l. 5.2.3.3 Sulfuric acid, solution at 9 mol/l. 5.2.3.4 Potassium i
47、odate (KIO3) powdered. 5.2.3.5 Potassium iodide (KI) crystalline. 5.2.3.6 Hydrochloric acid standard volumetric solution c(HCl) = 0,1 mol/l or sulfuric acid c(H2SO4) = 0,05 mol/l. 5.2.3.7 Zinc iodide (ZnI2)-starch indicator. Disperse 4 g starch into a small quantity of water. Add the dispersion to a
48、 solution of 20 g zinc chloride (ZnCl2) in 100 ml water. The solution is boiled until the volume has been reduced to 100 ml and finally diluted to 1 l while adding 2 g of ZnI2. 5.2.3.8 Standardization of sodium thiosulfate: 5.2.3.8.1 Reactions 5 KI + 5 H+5 HI + 5 K+(4) KIO3+ H+ HIO3+ K+ (5) HIO3+ 5
49、HI 3 I2+ 3 H2O (6) 3 I2+ 6 S2O32 6 I+ 3 S4O62- (7) 5.2.3.8.2 Determination Add 0,05 g of potassium iodate (5.2.3.4), 0,5 g of potassium iodide (5.2.3.5) into 50 ml water and a further 50 ml water in a conical flask. After mixing, add 10 ml standard volumetric solution acid (5.2.3.6). Titrate the liberated iodine immediately with the sodium thiosulfate solution (5.2.3.2). DIN EN 15074:2015-02 EN 15074:2014 (E) 11 5.2.3.8.3 Calculation The concentration, ct, expressed in moles per litre, of the sodiu
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