1、BSI Standards PublicationChemicals used for treatment of water intended for human consumption Silver salts for intermittent useBS EN 15030:2012+A1:2015BS EN 15030:2012+A1:2015National forewordThis British Standard is the UK implementation of EN 15030:2012+A1:2015. It supersedes BS EN 15030:2012 whic
2、h is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The UK participation in its preparation was ent
3、rusted to Technical Committee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correc
4、t application. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 86573 2ICS 13.060.20; 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy
5、and Strategy Committee on 28 February 2013.Amendments/corrigenda issued since publicationDate Text affected30 April 2015 Implementation of CEN amendment A1:2015BRITISH STANDARDEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15030:2012+A1 March 2015 ICS 71.100.80 Supersedes EN 15030:2012English
6、Version Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Sels dargent pour usage intermittent Produkte zur Aufbereitung von Wasser fr den menschlichen Gebra
7、uch - Silbersalze fr den nicht systematischen Gebrauch This European Standard was approved by CEN on 23 September 2012 and includes Amendment 1 approved by CEN on 5 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
8、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 member. This European Standard exists in three official ver
9、sions (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 versions. CEN members are the national standards bodies of Austria
10、, 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, Slovakia, Slovenia, Spain, Sweden,
11、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 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN na
12、tional Members. Ref. No. EN 15030:2012+A1:2015 E2 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references 5 3 Description . 6 4 Purity criteria 9 5 Test methods 10 6 Labelling - transportation - storage . 13 Annex A (informative) General information on silver salts . 16 Annex B (n
13、ormative) General rules relating to safety 18 Annex C (informative) Environmental, health and safety precautions within the chemical laboratory . 19 Bibliography 20 BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)3 Foreword This document (EN 15030:2012+A1:2015) has been prepared by Technical Commi
14、ttee 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 by September 2015, and conflicting national standards shall be withdrawn at
15、the latest by September 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 shall not be held responsible for identifying any or all such patent rights. This document supersedes !EN 15030:2012“. This document
16、includes Amendment 1 approved by CEN on 2015-01-04. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. The significant technical differences between this edition and EN 15030:2006 are as follows: Modification of 6.2 on labelling, deletion of the refe
17、rence to EU Directive 80/778/EEC of 15 July 1980 in order to take account of the latest Directive in force. 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, Cr
18、oatia, 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 and
19、 the United Kingdom. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption caused by the products covered by this European Standard: a) this European Standard provides no information as to wheth
20、er the products 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 these products remain in force. !NOTE
21、 1“ Conformity with this European Standard does not confer or imply acceptance or approval of the products in any of the member states of the EU or EFTA. The use of the products covered by this European Standard is subject to regulation or control by national authorities. !NOTE 2 These products are
22、used as biocides and comply with the relevant legislation in force. In the European Union, at the time of publication, this legislation is Regulation (EU) No 528/2012 1.“ Water which is to be preserved with silver !ions“ should fulfil the relevant legal requirements before the silver salt is added,
23、in particular microbiological requirements. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)5 1 Scope This European Standard is applicable to silver nitrate and silver sulfate !and silver chloride“ for the preservation of water intended for human consumption in intermittent applications in: water
24、supply plants, including their pipeline networks (small-size plants); water for the preparation of foodstuffs; water which is stored in packaged form or kept in enclosed systems (for example, water supply systems in land, water and airborne vehicles). The purpose of adding silver salts is to prevent
25、 the detrimental proliferation of microorganisms in water during storage or in enclosed supply systems. This European Standard describes the characteristics of silver salts, specifies the requirements for silver salts and gives reference to the analytical methods. It gives information on their use i
26、n water treatment. It also determines the rules relating to safe handling and use of silver salts (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, only the
27、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 laboratory use Specification and test methods (I
28、SO 3696) EN ISO 5961, Water quality Determination of cadmium by atomic absorption spectrometry (ISO 5961) EN ISO 10304-1, Water quality Determination of dissolved anions by liquid chromatography of ions Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulphate (I
29、SO 10304-1) EN ISO 11885, Water quality Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES) (ISO 11885) EN ISO 11969, Water quality Determination of arsenic Atomic absorption spectrometric method (hydride technique) (ISO 11969) EN ISO 12846, Water
30、 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 products for industrial use Sampling Vocabulary ISO 8213, Chemical products for
31、 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 cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods BS EN 15030:2012+A1:2015 EN 15030:2012+
32、A1:2015 (E)6 ISO 9965, Water quality Determination of selenium Atomic absorption spectrometric method (hydride technique) 3 Description 3.1 Identification 3.1.1 Chemical name a) Silver nitrate; b) Silver sulfate; ! c) silver chloride.“ 3.1.2 Synonym or common name !The naturally occurring mineral is
33、 called chlorargyrite or cerargirite, if weathered by air named as horn silver.“ 3.1.3 Relative molecular mass a) 169,87; b) 311,97; ! c) 143,23.“ 3.1.4 Empirical formula a) AgNO3; b) Ag2SO4; ! c) AgCl.“ 3.1.5 Chemical formula a) AgNO3; b) Ag2SO4; ! c) AgCl.“ BS EN 15030:2012+A1:2015 EN 15030:2012+A
34、1:2015 (E)7 3.1.6 CAS Registry Number 1)a) 7761-88-8; b) 10294-26-5; ! c) 7783-90-6.“ 3.1.7 !EINECS number“ 2)a) 231-853-9; b) 233-653-7; ! c) 232-033-3.“ 3.2 Commercial forms !The products are solids, available as powders or pelletized.“ 3.3 Physical properties 3.3.1 Appearance !White to slightly g
35、rey or yellowish. NOTE Silver chloride quickly darkens on exposure to light by disintegrating into elemental chlorine and metallic silver; the latter is responsible for the colour change.“ 3.3.2 Density ! a) 4,35 g/cm3(crystal density); b) 5,45 g/cm3(crystal density); c) 5,56 g/cm3(crystal density).
36、“ 3.3.3 Solubility (in water) ! a) 2,16 g/l; b) 8 g/l; 1)Chemical Abstracts Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substances. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)8 c) 1,88 mg/l at 25 C.“ 3.3.4 Vapour pressure at 20 C Not applicable. 3.3.5 Boiling
37、 point at 100 kPa 3)! a) 444 C (decomposition); b) 1 085 C (decomposition); c) 1 550 C.“ 3.3.6 Melting point ! a) 212 C; b) 652 C; c) 455 C.“ 3.3.7 Specific heat Not known. 3.3.8 Viscosity (dynamic) Not applicable. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3
38、.3.11 Physical hardness Not applicable. 3.4 Chemical properties a) silver nitrate in solution is almost neutral (the pH value of an aqueous solution at 100 g/l is approximately 6); 3)100 kPa = 1 bar. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)9 b) silver sulfate in solution is almost neutral
39、(the pH value of an aqueous solution at 5 g/l is approximately 5 to 6); ! c) the saturated aqueous solution (see 3.3.3) is pH neutral. Silver chloride is insoluble in alcohol, other organic solvents, dilute acids and concentrated nitric acid, but soluble in concentrated sulphuric acid and (depending
40、 on the individual concentration) in aqueous solutions of ammonia, chlorides, bromides, thiosulfates and cyanides under complexation of the silver ion. The standard redox potential (E0) of Ag+/Ag in neutral aqueous solution at 25 C is: E = +0,80 V. The standard redox potential (E0) of AgCl/Ag in neu
41、tral solution at 25 C is: E = +0,22 V.“ 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for silvers salts used for the preservation of water intended for human consumption. Limits are given for impurities commonly present in the products. Depending on t
42、he 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 the products should check the national regulations in order to clarify whether it is of appropriate purity for the preserv
43、ation of water intended for human consumption, taking into account water quality, required dosage, contents of other impurities and additives used in the products not stated in this product standard. Limits have been given for impurities and chemical parameters where these are likely to be present i
44、n 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 products !The content of
45、silver salts shall not be less than a mass fraction of 99 %.“ 4.3 Impurities and main by-products The products shall conform to the requirements specified in Table 1. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)10 ! Table 1 Impurities Impurity Limit mg/kg of product a) Silver nitrate b) Silver
46、 sulfate c) Silver chloride Chloride (Cl) max. 1 n.a. n.a. Copper (Cu) max. 0,056 100 30 Iron (Fe) max. 0,255 50 30 Nitrite (NO2) max. 0,5 n.a. n.a. Sulfate (SO42) max. 5 n.a. n.a. NOTE n.a. = not applicable “ 4.4 Chemical parameters The products shall conform to the requirements specified in Table
47、2. ! Table 2 Chemical parameters Parameter Limit mg/kg of product a) Silver nitrate b) Silver sulfate c) Silver chloride Arsenic (As) max. 5 5 6 Cadmium (Cd) max. 10 10 12 Chromium (Cr) max. 10 10 12 Mercury (Hg) max. 1 1 1,2 Nickel (Ni) max. 10 10 12 Lead (Pb) max. 10 10 12 Antimony (Sb) max. 10 10
48、 12 Selenium (Se) max. 10 10 12 NOTE Cyanide is not relevant, since the materials used in the production process are free from it. Pesticides and polycyclic aromatic hydrocarbons are not by-products of the production process. For parametric values of trace metal content in drinking water, see 2. “ 5
49、 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take into account ISO 6206. Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. BS EN 15030:2012+A1:2015 EN 15030:2012+A1:2015 (E)11 5.2 Analyses 5.2.1 Silver content (main product) The silver content shall be determined in accordance with EN ISO 11885. 5.2.2 Impurities 5.2.2.1 Sulfate The sulfate (SO42-) content shall be determined in accordance with EN ISO 10304-1. An alternative meth
