BS-EN-12386-1999.pdf
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12386:1999 The European Standard EN 12386:1998 has the status of a British Standard ICS 71.100.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Chemicals used for treatment of water intended for human consumption Ð Copper sulfate Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:30:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 June 1999 BSI 06-1999 ISBN 0 580 32120 7 BS EN 12386:1999 National foreword This British Standard is the English language version of EN 12386:1998. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment, which has the responsibility to: Ð aid enquirers to understand the text; Ð present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; Ð monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. The United Kingdom did not support this standard at the CEN Enquiry stage and voted against its acceptance at the Formal Vote stage. The principal UK objection were as follows. a) No information has been provided on the preparation of the test solution or the calculation of the result for the determination of iron, in order to apply the method referred to in5.2.2.4 which is intended for the analysis of water. b) The requirements for toxic substances in Table 2 are expressed in milligrams per kilogram of the product whereas the results of the determinations described in 5.2.3 will be in micrograms per litre of test solution. c) The standard additions technique is unnecesary for the determination of arsenic, antimony and selenium because any matrix interference is removed by conversion of the elements to gaseous hydrides. Additional information Article 8 of the Council of the European Community Directive 80/778/EEC relating to the quality of water intended for human consumption requires Member States to ensure that substances used in the preparation of drinking water do not cause any contravention of the maximum admissible concentrations prescribed in annex 1 to the Directive. This requirement is given effect in England and Wales by regulation 25 of the Water Supply (Water Quality) Regulations 1989 (similar provisions apply in Scotland and Northern Ireland). Regulation 25 makes provision for attaching conditions of use to chemicals which are authorized for use in public water supplies. Details of conditions of use are contained in the Secretary of State's List of Approved Products published by the Drinking Water Inspectorate, Floor 2/A1, Ashdown House, 123 Victoria Street, London SW1E 6DE. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled ªInternational Standards Correspondence Indexº, or by using the ªFindº facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. Amendments issued since publication Amd No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:30:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite  Europe Âen de Normalisation Europa Èisches Komitee fu Èr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12386:1998 E EUROPEAN STANDARDEN 12386 NORME EUROPE ÂENNE EUROPA ÈISCHE NORM October 1998 ICS 71.100.80 Descriptors: potable water, water treatment, chemical products, copper sulfates, description, physical properties, chemical properties, impurities, toxic substances, tests, conditioning, labelling, storage, marking English version Chemicals used for treatment of water intended for human consumption Ð Copper sulfate Produits chimiques utilise Âs pour le traitement de l'eau destine Âe a Á la consommation humaine Ð Sulfate de cuivre Produkte zur Aufbereitung von Wasser fu Èr den menschlichen Gebrauch Ð Kupfersulfat This European Standard was approved by CEN on 26 September 1998. 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 concerning such national standards may be obtained on application to the Central Secretariat 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 into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:30:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 12386:1998 BSI 06-1999 Foreword This European Standard 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 by publication of an identical text or by endorsement, at the latest by April 1999, and conflicting national standards shall be withdrawn at the latest by April 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Description3 3.1Identification3 3.2Commercial form3 3.3Physical properties3 3.4Chemical properties4 4Purity criteria4 4.1Composition of commercial product4 4.2Impurities and main by-products4 4.3Toxic substances4 5Test methods4 5.1Sampling4 5.2Analyses4 6Labelling Ð Transportation Ð Storage8 6.1Means of delivery8 6.2Risk and safety labelling according to the EU Directives8 6.3Transportation regulations and labelling8 6.4Marking8 6.5Storage8 Annex A (informative) General information on copper sulfate9 Annex B (normative) General rules relating to safety9 Annex C (informative) Routine method for the determination of copper in copper sulfate pentahydrate9 Annex D (informative) Bibliography10 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:30:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 12386:1998 BSI 06-1999 1) Chemical Abstracts Service Registry number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: 1) 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; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or characteristics of this product remain in force. 1 Scope This European Standard is applicable to copper (II) sulfate pentahydrate used for treatment of water intended for human consumption. It describes the characteristics of copper (II) sulfate pentahydrate and specifies the requirements and the corresponding test methods for copper (II) sulfate pentahydrate. It gives information on its use in water treatment. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN ISO 3696, Water for analytical laboratory use Ð Specification and test methods. (ISO 3696:1987) ISO 3165, Sampling of chemical products for industrial use Ð Safety in sampling. ISO 4793, Laboratory sintered (fritted) filters Ð Porosity grading, classification and designation. ISO 5993, Sodium hydroxide for industrial use Ð Determination of mercury content Ð flameless atomic absorption spectrometric method. ISO 6206, Chemical products for industrial use Ð Sampling Ð Vocabulary. ISO 6332, Water quality Ð Determination of iron Ð Spectrometric method using 1,10-phenanthroline. ISO 6353-1, Reagents for chemical analysis Ð Part 1: General test methods. ISO 8213, Chemical products for industrial use Ð Sampling techniques Ð Solid chemical products in the form of particles varying from powders to coarse lumps. 3 Description 3.1 Identification 3.1.1 Chemical name Copper (II) sulfate pentahydrate. 3.1.2 Synonym or common names Copper vitriol, blue vitriol, cupric sulfate. 3.1.3 Relative molecular mass Pentahydrate: 249,69. 3.1.4 Empirical formula CuSO4.5H2O. 3.1.5 Chemical formula CuSO4.5H2O. 3.1.6 CAS Registry number1) Anhydrous form: 7758-98-7. Pentahydrate: 7758-99-7. 3.1.7 EINECS reference2) 231-847-6 (anhydrous form). 3.2 Commercial form The product is a powder or crystals. 3.3 Physical properties 3.3.1 Appearance and odour The product is a powder or crystals, with a deep blue colour and no odour. 3.3.2 Density The density of the pentahydrate is 2,28 g/cm3at 20 8C. 3.3.3 Solubility in water The solubility of the pentahydrate is 266 g/l at 20 8C. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa3) Not applicable. 3.3.6 Melting point The product decomposes above 300 8C. 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. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 05:30:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 12386:1998 BSI 06-1999 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties If thermal decomposition occurs, SO2is released. Copper sulfate pentahydrate dehydrates partially at 29 8C and entirely at 250 8C. The pH value of an aqueous solution with a concentration of 10 g/l CuSO4 is in the range 3,5 to 4. 4 Purity criteria Limits have been given for impurities and toxic substances where these are likely to be present in significant quantities from the current production process and raw materials. If a change in the production process or raw materials leads to significant quantities of other impurities or by-products being present, this shall be notified to the user. 4.1 Composition of commercial product The content of copper sulfate pentahydrate shall not be less than 98 % by mass %(m/m). 4.2 Impurities and main by-products The product shall conform to the requirements specified in Table 1. Table 1 Ð Impurities ImpurityLimit in product (pentahydrate) Insoluble mattermax.0,5 % (m/m) Moisturemax.0,5 % (m/m) Free sulfuric acidmax.0,2 % (m/m) Iron (Fe)max.200 mg/kg 4.3 Toxic substances NOTEFor the purposes of this standard ªtoxic substancesº are those defined in the EU Directive 80/778/EEC of 15 July 1980 (see D.1). The content of toxic substances shall conform to the requirements specified in Table 2. Table 2 Ð Toxic substances ParameterLimit mg/kg of product (pentahydrate) Antimony (Sb)max.1 Arsenic (As)max.5 Cadmium (Cd)max.10 Chromium (Cr)max.5 Lead (Pb)max.70 Mercury (Hg)max.0,1 Nickel (Ni)max.100 Selenium (Se)max.1 NOTECyanides (CN2), pesticides and polycyclic aromatic hydrocarbons, as listed in EU Directive 80/778/EEC, are not relevant because the raw materials used in the manufacturing process are free of them. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. 5.2 Analyses All reagents shall be of a recognized analytical grade and the water used shall conform to the appropriate grade specified in EN ISO 3696. 5.2.1 Main product NOTEFor routine method see annex C. 5.2.1.1 Principle The copper content is determined electrolytically. 5.2.1.2 Reagents 5.2.1.2.1 Nitric acid concentrated, r = 1,40 g/ml. 5.2.1.2.2 Sulfuric acid concentrated, r = 1,84 g/ml. 5.2.1.2.3 Ethanol, solution 95 % (V/V). 5.2.1.3 Apparatus Ordinary laboratory apparatus and glassware, together with the following. 5.2.1.3.1 Direct current supply. 5.2.1.3.2 Tared, perforated platinum cylinder cathode. 5.2.1.3.3 Platinum wire anode. 5.2.1.4 Test sample Mix a 500 g sample thoroughly and place approximately 100 g of this material in a properly stoppered glass container. 5.2.1.5 Procedure Weigh out a test portion of approximately 5 g of copper sulfate pentahydrate as rapidly as possible and transfer quantitatively. To a tall-form 400 ml beaker, dissolve the test portion in 350 ml water and then add 10 ml H2SO4(5.2.1.2.2). Allow the solution to cool to room temperature. Deposit the copper electrolytically on a tared, perforated, platinum cylinder cathode (5.2.1.3.2), with a platinum wire (5.2.1.3.3) for the anode. Cover the beaker carefully with a split watch glass to prevent loss by spraying. Apply a current density of 0,5 A/dm2of cathode area until deposition is complete. The cathode area equals gross area of inside of cylinder, including perforations. It is customary to conduct this operation overnight. When the solution is colourless, wash down the cover glass, electrodes and sides of beaker, raising the level of the liquid slightly, and continue the electrolysis for about 15 min, noting whether or n
