EN 1197-2014 en Chemicals used for treatment of water intended for human consumption - Monozinc phosphate solution《处理人类饮用水的化学品 单锌磷酸盐溶液》.pdf

1、BSI Standards PublicationBS EN 1197:2014Chemicals used for treatmentof water intended for humanconsumption Monozincphosphate solutionBS EN 1197:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1197:2014. Itsupersedes BS EN 1197:2006 which is withdrawn.The UK

2、 participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract

3、. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82883 6ICS 13.060.20; 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under th

4、e authority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 1197:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1197 March 2014 ICS 71.100.80 Supersedes EN 1197:2006English Version Chemicals used for treatm

5、ent of water intended for human consumption - Monozinc phosphate solution Produits chimiques pour le traitement de leau destine la consommation humaine - Bis-dihydrognophosphate de zinc en solution Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Monozinkphosphat-Lsung This Europe

6、an Standard was approved by CEN on 5 January 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 and bibliographical references conc

7、erning 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 responsibility of a CEN member in

8、to 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 Yugoslav Republic of Macedonia, France,

9、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 DE NORMALISATION EUROPISCHES KOMITE

10、E FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1197:2014 EBS EN 1197:2014EN 1197:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 No

11、rmative references 5 3 Description .5 3.1 Identification .5 3.2 Commercial form .6 3.3 Physical properties 6 3.4 Chemical properties 7 4 Purity criteria 7 4.1 General 7 4.2 Composition of commercial product .7 4.3 Impurities and main by-products .8 4.4 Chemical parameters 8 5 Test methods 8 5.1 Samp

12、ling .8 5.2 Analysis 9 6 Labelling - Transportation - Storage . 11 6.1 Means of delivery 11 6.2 Labelling according to the EU legislation )12 6.3 Transportation regulations and labelling . 12 6.4 Marking 12 6.5 Storage . 12 Annex A (informative) General information on monozinc phosphate solution . 1

13、4 A.1 Origin . 14 A.2 Use . 14 A.3 General rules relating to safety . 14 Bibliography . 16 BS EN 1197:2014EN 1197:2014 (E) 3 Foreword This document (EN 1197:2014) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard sha

14、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2014 and conflicting national standards shall be withdrawn at the latest by September 2014. This document supersedes EN 1197:2006. Significant technical differences

15、 between this edition and EN 1197:2006 are as follows: replacement of warning and safety precautions notes by labelling according to REGULATION (EC) No 1272/2008. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement

16、 this European Standard: 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, Poland, Portugal, Romania, Slo

17、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. WARNING. The use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of

18、this standard to establish appropriate health and safety practices and determine the applicability of regulatory limitations prior to use. BS EN 1197:2014EN 1197:2014 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the prod

19、uct 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, while awaiting the adoption of verifiable European criteria, existing national

20、 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 States of the EU or EFTA. The use of the product covered by this European Standa

21、rd is subject to regulation or control by National Authorities. BS EN 1197:2014EN 1197:2014 (E) 5 1 Scope This European Standard is applicable to monozinc phosphate solution used for treatment of water intended for human consumption. It describes the characteristics of monozinc phosphate solution an

22、d specifies the requirements and the corresponding test methods for monozinc phosphate solution. It gives information on its use in water treatment. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicat

23、ion. 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, Water for analytical laborato

24、ry use - Specification and test methods (ISO 3696:1987) EN ISO 5961, Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961:1994) EN ISO 11885, Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES) (ISO

25、11885:2007) EN ISO 11969, Water quality - Determination of arsenic - Atomic absorption spectrometric method (hydride technique) (ISO 11969:1996) EN ISO 12846, Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012) ISO

26、 2997, Phosphoric acid for industrial use Determination of sulphate content Method by reduction and titrimetry ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 3360, Phosphoric acid and sodium phosphates for industrial use (including foodstuffs) Determination of fluo

27、rine content Alizarin complexone and lanthanum nitrate photometric method ISO 3706, Phosphoric acid for industrial use (including foodstuffs) Determination of total phosphorus (V) oxide content Quinoline phosphomolybdate gravimetric method ISO 6206, Chemical products for industrial use Sampling Voca

28、bulary ISO 6703-1, Water quality Determination of cyanide Part 1: Determination of total cyanide ISO 8288:1986, Water quality Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods ISO 9965, Water quality Determination of selenium Atomic absorpt

29、ion spectrometric method (hydride technique) 3 Description 3.1 Identification 3.1.1 Chemical name Monozinc phosphate solution. BS EN 1197:2014EN 1197:2014 (E) 6 3.1.2 Synonym or common name Not applicable. 3.1.3 Relative molecular mass Not applicable. 3.1.4 Empirical formula Zn(H2PO4)2(Solution). 3.

30、1.5 Chemical formula Zn(H2PO4)2(Solution). 3.1.6 CAS Registry Number 1)13598-37-3. 3.1.7 EINECS reference 2)237-067-2. 3.2 Commercial form The monozinc phosphate is available as a solution; commonly used concentration is 500 g/l. 3.3 Physical properties 3.3.1 Appearance The product is a clear soluti

31、on. 3.3.2 Density The density at 20 C is 1,7 g/ml for a concentration of 500 g/l. 3.3.3 Solubility in water Miscible in any proportion. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa 3)Not applicable. 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Exist

32、ing Commercial Chemical Substances. 3) 100 kPa = 1 bar BS EN 1197:2014EN 1197:2014 (E) 7 3.3.6 Melting point Not applicable. 3.3.7 Specific heat Not known. 3.3.8 Viscosity (dynamic) 180 mPas for a concentration of 500 g/l at 20 C. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure N

33、ot applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Solutions of monozinc phosphate have acidic reactions. The pH value of a solution containing 5 g/l of Zn (H2PO4)2is approximately 2,1. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity req

34、uirements for monozinc phosphate solution used for the treatment of 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, this shall be notified to

35、 the user and when necessary to relevant authorities. Users of this product should check 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 i

36、mpurities and additives used in the products not stated in this product standard. Limits have been given for impurities and chemicals 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 mate

37、rials 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 conform to the following requirements for the solution: phosphate content expressed as P2O5: mass fraction of (39 2,

38、0) %; zinc oxide content: mass fraction of (15 1,0) %. BS EN 1197:2014EN 1197:2014 (E) 8 4.3 Impurities and main by-products The product shall conform to the requirements specified in Table 1. Table 1 Impurities Impurity Limit in mg/kg of solution Sulfate (SO42-) max. 500 Fluoride (F-) max. 10 4.4 C

39、hemical parameters Content of various chemical parameters depends on the origin of the raw materials, most of these elements are present only as traces. The product shall conform to the requirements specified in Table 2. Table 2 Chemical parameters Parameter Limit in mg/kg of solution Antimony (Sb)

40、max. 3 Arsenic (As) max. 3 Cadmium (Cd) max. 3 Chromium (Cr) max. 10 Cyanide (CN) max. 5 Lead (Pb) max. 10 Mercury (Hg) max. 1 Nickel (Ni) max. 10 Selenium (Se) max. 3 NOTE Pesticides and polycyclic aromatic hydrocarbons are not relevant in monozinc phosphate solution. For parametric values of monoz

41、inc phosphate solution on trace metal content in drinking water, see1. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. 5.1.1 Sampling from drums and bottles 5.1.1.1 General Mix the contents of each container to be sampled by shaking the conta

42、iner, by rolling it or by rocking it from side to side, taking care not to damage the container or spill any of the liquid. If the design of the container is such (for example, a narrow-necked bottle) that it is impracticable to use a sampling implement, take a sample by pouring after the contents h

43、ave been thoroughly mixed. BS EN 1197:2014EN 1197:2014 (E) 9 Otherwise examine the surface of the liquid. If there are signs of surface contamination, take samples from the surface as described in 5.1.1.2. Otherwise, take samples as described in 5.1.1.3. 5.1.1.2 Surface sampling Take a sample using

44、a suitable ladle. Lower the ladle into the liquid until the rim is just below the surface, so that the surface layer runs into it. Withdraw the ladle just before it fills completely and allow any liquid adhering to the ladle to drain off. If necessary, repeat this operation so that, when the other s

45、elected containers have been sampled in a similar manner, the total volume of sample required for subsequent analysis is obtained. 5.1.1.3 Bottom sampling Take a sample using an open sampling tube, or a bottom-valve sampling tube, suited to the size of container and the viscosity of the liquid. When

46、 using an open sampling tube, close it at the top and then lower the bottom end to the bottom of the container. Open the tube and move it rapidly so that the bottom of the tube traverses the bottom of the container before the tube is filled. Close the tube, withdraw it from the container and allow a

47、ny liquid adhering at the outside of the tube to drain off. When using a bottom-valve sampling tube, close the valve before lowering the tube into the container and then proceed in a similar manner to that when using an open sampling tube. 5.1.2 Sampling from tanks and tankers From each access point

48、, take samples as follows: a) from the surface of the liquid, using a ladle as described in 5.1.1.2; b) from the bottom of the tank or tanker, using a sampling tube as described in 5.1.1.3 or using a specially designed bottom-sampling apparatus; c) from one or more positions, depending on the overal

49、l depth, between the bottom and the surface using a weighted sampling can. 5.2 Analysis 5.2.1 Monozinc phosphate (main product) 5.2.1.1 Phosphate (main product) The determination of the concentration of phosphate (P2O5) shall be carried out in accordance with ISO 3706. 5.2.1.2 Zinc oxide (main product) 5.2.1.2.1 Principle Gravimetric determination of zinc oxide (ZnO). Zinc is precipitated as zinc ammoniumphosphate. 5.2.1.2.2 Reagents All the reagents shall be of a recognised analytical grade and the water used shall conform