BS-EN-13177-2002.pdf
BRITISH STANDARD BS EN 13177:2002 Chemicals used for treatment of water intended for human consumption Methanol The European Standard EN 13177:2002 has the status of a British Standard ICS 71.100; 71.100.80 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13177:2002 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 1 August 2003 © BSI 1 August 2003 ISBN 0 580 42379 4 National foreword This British Standard is the official English language version of EN 13177:2002. The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Additional information The United Kingdom voted against the acceptance of this standard at the Formal Vote stage because a new clause (A.3) concerning toxicological aspects, which are of little relevance to a specification for methanol, has been added. It is considered that there are several inaccuracies in the statement concerning the United States Environmental Protection Agency (USEPA) in A.3, as follows. a) MCL is “Maximum Contaminant Level”, not “Maximum Concentration Level”. b) “MCGL” should be “MCLG”, which is “Maximum Contaminant Level Goal”. c) USEPA does not define any limits for methanol in drinking water (neither MCL nor MCLG). Article 10 of the Council of the European Community Directive 98/83/EC on the quality of water intended for human consumption requires Member States to ensure that substances and materials (including associated impurities) used in the preparation of drinking water do not remain in treated water at concentrations that are higher than necessary or that would reduce the protection of public health provided for in 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 and filter media that are authorized for use in public water supplies. Details of conditions of use are contained in the List of Products and Processes Approved Under Regulations 25 and 26 For Use In Connection With The Supply of Water For Drinking, Washing, Cooking and Food Production Purposes published by the Drinking Water Inspectorate, Floor 2/A1, Ashdown House, 123 Victoria Street, London SW1 6DE (www.dwi.gov.uk). Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 13177 September 2002 ICS 71.100; 71.100.80 English version Chemicals used for treatment of water intended for human consumption - Methanol Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Méthanol Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Methanol This European Standard was approved by CEN on 25 July 2002. 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 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 into its own language and notified to the Management Centre 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, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13177:2002 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 2 Contents page Foreword3 Introduction.4 1Scope 5 2Normative references 5 3Description .5 3.1Identification.5 3.2Commercial form6 3.3Physical properties6 3.4Chemical properties 7 4Purity criteria7 4.1Composition of commercial product.7 4.2Impurities and main by-products.7 4.3Chemical parameters.7 5Test methods8 5.1Sampling.8 5.2Analysis 9 6Labelling - Transportation - Storage14 6.1Means of delivery.14 6.2Risk and safety labelling according to the EU Directives 15 6.3Transportation regulations and labelling15 6.4Marking .15 6.5Storage16 Annex A (informative) General information on synthetic methanol17 Annex B (normative) General rules relating to safety19 Bibliography20 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 3 Foreword This document EN 13177:2002 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 March 2003, and conflicting national standards shall be withdrawn at the latest by March 2003. Annex A is informative. Annex B is normative. 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, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: a) this standard provides no information as to whether the product can 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 this product remain in force. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 5 1 Scope This European Standard is applicable to synthetic methanol used for treatment of water intended for human consumption. It specifies the characteristics of synthetic methanol and specifies the requirements and the corresponding test methods for synthetic methanol. Annex A gives information on its use in water treatment. NOTEConformity with this standard does not confer of 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 Standard is subject to regulation or control by National Authorities. 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 (including amendments). EN 1483, Water quality - Determination of mercury. EN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987). EN 26595, Water quality - Determination of total arsenic - Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982). ISO 3165, Sampling of chemical products for industrial use - Safety in sampling. ISO 3856-2, Paints and varnishes - Determination of “soluble“ metal content - Part 2 : Determination of antimony content - Flame atomic absorption spectrometric method and Rhodamine B spectrophotometric method. ISO 6206, Chemical products for industrial use - Sampling Vocabulary. ISO 8288:1986, Water quality - Determination of cobalt, nickel, copper, zinc, cadmium and lead - Flame atomic absorption spectrometric methods. ISO 9174, Water quality - Determination of chromium - Atomic absorption spectrometric methods. ISO 9965, Water quality - Determination of selenium - Atomic absorption spectrometric method (hydride technique). 3 Description 3.1 Identification 3.1.1 Chemical name Methanol. 3.1.2 Synonym or common names Methyl alcohol, carbinol. 3.1.3 Relative molecular mass 32,04. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 6 3.1.4 Empirical formula CH4O. 3.1.5 Chemical formula CH3OH. 3.1.6 CAS Registry Number 1) 67-56-1. 3.1.7 EINECS reference 2) 200-65-96. 3.2 Commercial form The product is available as colourless liquid. 3.3 Physical properties 3.3.1 Appearance The product is a colourless liquid at 20 °C. 3.3.2 Density The density at 20 °C is given in Table 1 (see 3 and 4). Table 1 Density Concentration mass fraction of methanol, % Density g/ml 900,8219 920,8163 940,8103 960,8048 980,7990 99,850,7936 1000,7931 3.3.3 Solubility in water Miscible. 3.3.4 Vapour pressure 12,7 kPa at 20 °C (for pure methanol). 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 7 3.3.5 Boiling point at 100 kPa 3) 64,6 °C (for pure methanol). 3.3.6 Melting point - 98 °C (for pure methanol). 3.3.7 Specific heat 2,53 kJ /kg.K at 25 °C (for pure methanol). 3.3.8 Viscosity, dynamic 0,594 mPa.s at 20 °C (for pure methanol). 3.3.9 Critical temperature (for gas) Not applicable. 3.3.10 Critical pressure (for gas) Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Methanol is a polar and protic organic solvent. 4 Purity criteria 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 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 product shall contain a minimum mass fraction of 99,85 % pure synthetic methanol. 4.2 Impurities and main by-products The propan-2-one content shall be less than 30 mg/kg of mass fraction of 100 % methanol. NOTEThe product contains traces of water and ethanol which do not affect its use in water treatment. 4.3 Chemical parameters The product shall conform to the requirements specified in Table 2. 3) 100 kPa = 1 bar. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13177:2002 (E) 8 Table 2 Chemical parameters ParameterLimit in mass fraction of 100 % methanol mg/kg Arsenic (As)max.0,01 Cadmium (Cd)max.0,01 Chromium (Cr)max.0,01 Mercury (Hg)max.0,01 Nickel (Ni)max.0,01 Lead (Pb)max.0,01 Antimony (Sb)max.0,01 Selenium (Se)max.0,01 NOTEFor parametric values of methanol on trace metal content in drinking water (see 1). 5 Test methods 5.1 Sampling 5.1.1 General Observe the general recommendations of ISO 3165 and take account of ISO 6206. 5.1.2 Sampling from drums and bottles 5.1.2.1 General 5.1.2.1.1Mix the contents of the container to be sampled by shaking the container, by rolling it or by rocking it from side to side, taking care not to damage the container or spill any of the liquid. 5.1.2.1.2If 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 have been thoroughly mixed. Otherwise, proceed as described in 5.1.2.1.3. 5.1.2.1.3Examine the surface of the liquid. If there are signs of surface contamination, take samples from the surface as described in 5.1.2.2; otherwise, take samples as described in 5.1.2.3. 5.1.2.2 Surface sampling Take a sample using 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 selected containers have been sampled in a similar manner, the total volume of sample required for subsequent analysis is obtained. 5.1.2.3 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 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 any liquid adhering to the outside of the tube to drain off. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:05:54 GMT+00:00 2006, Uncontrolled C
