BS EN 15796-2010 Chemicals used for treatment of swimming pool water - Calcium hypochlorite《游泳池水处理用化学制品 次氯酸钙》.pdf

1、BS EN 15796:2010ICS 13.060.25; 71.100.80NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDChemicals used fortreatment of swimmingpool water CalciumhypochloriteThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30

2、April2010 BSI 2010ISBN 978 0 580 61782 9Amendments/corrigenda issued since publicationDate CommentsBS EN 15796:2010National forewordThis British Standard is the UK implementation of EN 15796:2010.The UK participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinki

3、ng water treatment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot conf

4、er immunityfrom legal obligations.BS EN 15796:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15796 January 2010 ICS 71.100.80 English Version Chemicals used for treatment of swimming pool water - Calcium hypochlorite Produits chimiques utiliss pour le traitement de leau des piscines - Hypo

5、chlorite de calcium Produkte zur Aufbereitung von Schwimm-und Badebeckenwasser - Calciumhypochlorit This European Standard was approved by CEN on 4 December 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar

6、d 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French,

7、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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cy

8、prus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION

9、COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15796:2010: EBS EN 15796:2010EN 15796:2010 (E) 2 Contents Page

10、Foreword 3Introduction .41 Scope 52 Normative reference 53 Description .54 Purity criteria 54.1 General 54.2 Composition of commercial product .54.3 Impurities and main by-products .54.4 Chemical parameters 65 Test methods 66 Labelling - Transportation - Storage 66.1 Means of delivery .66.2 Risk and

11、 safety labelling according to the EU Directives .66.3 Transportation regulations and labelling 76.4 Marking .76.5 Storage 8Annex A (informative) General information on calcium hypochlorite 9A.1 Origin 9A.2 Use 9Annex B (normative) General rules relating to safety . 11B.1 Rules for safe handling and

12、 use . 11B.2 Emergency procedures 11Bibliography . 12BS EN 15796:2010EN 15796:2010 (E) 3 Foreword This document (EN 15796:2010) 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 nationa

13、l standard, either by publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights

14、. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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, Cyp

15、rus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15796:2010EN 15796:2010 (E) 4

16、Introduction In respect of potential adverse effects on the quality of water for swimming pools, caused by the product covered by this standard: a) this 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 sho

17、uld 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 standard does not confer or imply acceptance or approval of the product in any of the

18、 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. BS EN 15796:2010EN 15796:2010 (E) 5 1 Scope This European Standard is applicable to calcium hypochlorite used directly, or for the production of for

19、mulations, for treatment of water for swimming pools. It describes the characteristics of calcium hypochlorite and specifies the requirements and the corresponding test methods for calcium hypochlorite. It gives information on its use in swimming pool water treatment. It also determines the rules re

20、lating to safe handling and use of calcium hypochlorite (see Annex B). 2 Normative reference The following referenced document is indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced doc

21、ument (including any amendments) applies. EN 900, Chemicals used for treatment of water intended for human consumption Calcium hypochlorite 3 Description For the identification, the commercial form, the physical properties and the chemical properties see the relevant subclauses of EN 900. 4 Purity c

22、riteria 4.1 General This European Standard specifies the minimum purity requirements for calcium hypochlorite used for the treatment of water for swimming pools. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurit

23、ies may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. NOTE Users of the product should check national regulations in order to clarify whether it is of appropriate purity for treatment of water for swimming pools, taking into account water quali

24、ty, required dosage, and contents of other impurities and additives used in the product not stated in the 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 materia

25、ls. If the production process or raw materials lead to significant quantities of other impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product Calcium hypochlorite is available in powder, granular or tablet form with a minimum con

26、centration of mass fraction 65,5 % calcium hypochlorite (Ca(ClO)2) (equivalent to an available active chlorine content in mass fraction of at least 65 %) at the time of delivery by the producer. The concentration of calcium hypochlorite shall be equal to or greater than the value specified by the ma

27、nufacturer. Dissolution quality, calculated as available chlorine which is obtainable within 1 min after dissolution in water, shall not be less than a mass fraction of 45,5 %. 4.3 Impurities and main by-products The content of impurities and water-insoluble matter shall conform to the requirements

28、specified in EN 900. BS EN 15796:2010EN 15796:2010 (E) 6 4.4 Chemical parameters The contents of arsenic, cadmium, chromium, mercury, nickel, lead, antimony, selenium and bromate for each type of product shall conform to the requirements specified in EN 900. 5 Test methods The methods for sampling a

29、nd analysis are those specified in EN 900. 6 Labelling - Transportation - Storage 6.1 Means of delivery Calcium hypochlorite shall be delivered in plastics-coated steel drums or polyethylene bottles. In order that the purity of the product is not affected, the means of delivery shall not have been u

30、sed previously for any different product or it shall have been specially cleaned and prepared before use. 6.2 Risk and safety labelling according to the EU Directives1)The following labelling requirements shall apply to calcium hypochlorite dry at the date of the publication of this standard. a) Sym

31、bols and indications of danger: 1) O: Oxidizing; 2) C: Corrosive; 3) N: Dangerous for the environment; b) Nature of special risks attributed to dangerous substances: 1) R 8: Contact with combustible material may cause fire; 2) R22: Harmful if swallowed; 3) R 31: Contact with acids liberates toxic ga

32、s; 4) R 34: Causes burns; 5) R 50: Very toxic to aquatic organisms; c) Safety advice concerning dangerous substances: 1) S1/2: Keep locked up and out of the reach of children; 2) S 26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; 3) S 36/37/39: Wear s

33、uitable protective clothing, gloves and eye/face protection; 1) See Bibliography, 1. BS EN 15796:2010EN 15796:2010 (E) 7 4) S 45: In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible); 5) S 61: Avoid release to the environment. Refer to special in

34、structions/Safety data sheets. 6.3 Transportation regulations and labelling The following classification requirements shall apply to calcium hypochlorite dry at the date of the publication of this standard. Calcium hypochlorite is listed as UN Number2) 1748 for granular, calcium hypochlorite mixture

35、, dry; 1748 for tablets, calcium hypochlorite mixture, dry; (The above products contain more than 39 % mass fraction available chlorine.) 2880 for granular, calcium hypochlorite, hydrated or calcium hypochlorite, hydrated mixture; 2880 for tablets, calcium hypochlorite, hydrated or calcium hypochlor

36、ite, hydrated mixture. (The above products contain a minimum of 5,5 % mass fraction water but not more than 16 % mass fraction water.) RID3) ADR4): class 5.1, classification code O2; packing group II (powder and granular) and packing group III (tablets). IMDG5): class 5.1. IATA6): class 5.1. 6.4 Mar

37、king The marking shall include the following: the name “calcium hypochlorite“, trade name, grade and type; the net mass; the name and address of supplier and/or manufacturer; the statement “This product conforms to EN 15796“. 2) United Nations Number. 3) Regulations concerning International carriage

38、 of Dangerous goods by rail. 4) European Agreement concerning the international carriage of Dangerous goods by Road. 5) International Maritime transport of Dangerous Goods. 6) International Air Transport Association. BS EN 15796:2010EN 15796:2010 (E) 8 6.5 Storage 6.5.1 General The product shall be

39、stored in airtight containers in a cool, dry and well-ventilated room. 6.5.2 Long term stability a) Heat stability: At temperatures above 177 C, decomposition is rapid with evolution of oxygen and heat and thus increasing the risks of pressure build-up to blow off the lid or rupture the container. D

40、ecomposition also occurs at temperatures maintained above about 50 C for longer periods. NOTE Decomposition products are calcium chloride (CaCl2), oxygen (O2) and chlorine (Cl2). b) Chemical stability: Contamination can initiate a vigorous chemical reaction resulting in fire and/or explosion. 6.5.3

41、Storage incompatibilities Keep away from acids, acidic salts, inflammable substances, organic compounds and moisture. BS EN 15796:2010EN 15796:2010 (E) 9 Annex A (informative) General information on calcium hypochlorite A.1 Origin A.1.1 Raw materials Calcium hypochlorite is manufactured from chlorin

42、e, calcium hydroxide and sodium hydroxide. A.1.2 Manufacturing process It is produced by drying a filter cake of neutral calcium hypochlorite dihydrate that is usually prepared from calcium hydroxide (hydrated lime) (Ca(OH)2), sodium hydroxide (caustic soda) (NaOH), and chlorine (Cl2). A.2 Use A.2.1

43、 Function Its functions in swimming pool water treatment are disinfection, the removal of ammonium compounds, the oxidation of sulfides and the oxidation of iron (II) to iron (III). A.2.2 Form in which it is used It is used dissolved in water as a dosing solution usually at a mass fraction of 1 % to

44、 4 %. A.2.3 Treatment dose The treatment dose depends on the composition of the swimming pool water. The dose should be controlled to achieve the minimum free residual concentration that gives satisfactory microbial quality. A.2.4 Means of application It is applied using a metering pump, from a diss

45、olving tank. A.2.5 Secondary effects The secondary effects include the following: slight increase in pH; slight increase in the chloride content; odour and colour removal; oxidation of organic compounds; local precipitation of carbonate at injection point. BS EN 15796:2010EN 15796:2010 (E) 10 A.2.6

46、Removal of excess product Excess active chlorine can be removed by utilizing a reducing agent such as sulfur dioxide gas or an aqueous solution of a sulfite compound. Passing through activated carbon is also effective. BS EN 15796:2010EN 15796:2010 (E) 11 Annex B (normative) General rules relating t

47、o safety B.1 Rules for safe handling and use The supplier shall provide current safety instructions. WARNING NEVER MIX THIS PRODUCT WITH ORGANIC CHLORINE (Trichloroisocyanuric Acid, Dichloroisocyanuric acid salt or any product containing them) WITHIN THE SAME CONTAINER. B.2 Emergency procedures B.2.

48、1 First aid In case of skin contact, rinse with copious amounts of water, remove contaminated clothing. In the event of eye or mucous membrane contact, rinse immediately with copious amounts of water and consult a doctor. If swallowed, little information is available but corrosion and freeze burns s

49、hall be expected. Wash out the mouth with water and give 200 ml to 300 ml of water to drink B.2.2 Spillage Wear respiratory equipment. Collect and store in separate plastics container. Do not accumulate the spilt material, dispose of it via a rubbish bin or drains. Disposal shall be carried out in accordance with the local regulations. B.2.3 Fire The material is not combustible, but due to the formation of oxygen as decomposition by-product it will support com