1、BS EN 13177:2010ICS 13.060.20; 71.100.80NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDChemicals used fortreatment of waterintended for humanconsumption MethanolThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee o
2、n 31 May2010. BSI 2010ISBN 978 0 580 68325 1Amendments/corrigenda issued since publicationDate CommentsBS EN 13177:2010National forewordThis British Standard is the UK implementation of EN 13177:2010. Itsupersedes BS EN 13177:2002 which is withdrawn.The UK participation in its preparation was entrus
3、ted to TechnicalCommittee CII/59, Chemicals for drinking 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 appl
4、ication.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 13177:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13177 April 2010 ICS 71.100.80 Supersedes EN 13177:2002English Version Chemicals used for treatment of water intended for human consumption - M
5、ethanol Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Mthanol Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Methanol This European Standard was approved by CEN on 28 February 2010. CEN members are bound to comply with the CEN/CENELEC In
6、ternal 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 CEN Management Centre or to any CEN m
7、ember. 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 CEN Management Centre has the same status as the official versions. CEN me
8、mbers are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spai
9、n, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION 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 Me
10、mbers. Ref. No. EN 13177:2010: EBS EN 13177:2010EN 13177:2010 (E) 2 Contents Page Introduction .41 Scope 52 Normative references 53 Description .53.1 Identification .53.2 Commercial form .63.3 Physical properties 63.4 Chemical properties 74 Purity criteria 74.1 General 74.2 Composition of commercial
11、 product .74.3 Impurities and main by-products .84.4 Chemical parameters 85 Test methods 85.1 Sampling .85.2 Analysis 96 Labelling - Transportation - Storage . 156.1 Means of delivery 156.2 Risk and safety labelling according to the EU Directives . 156.3 Transportation regulations and labelling . 16
12、6.4 Marking 166.5 Storage . 16Annex A (informative) General information on synthetic methanol . 17A.1 Origin . 17A.2 Use . 17A.3 Toxicological aspects 18Annex B (normative) General rules relating to safety 19B.1 Rules for safe handling and use . 19B.2 Emergency procedures 19Bibliography . 20BS EN 13
13、177:2010EN 13177:2010 (E) 3 Foreword This document (EN 13177:2010) 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 national standard, either by publication of an identical text or by
14、endorsement, at the latest by October 2010, and conflicting national standards shall be withdrawn at the latest by October 2010. 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
15、identifying any or all such patent rights. This document supersedes EN 13177:2002. 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, Cyprus, Czech Repu
16、blic, 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. Differences between this edition and EN 13177:2002
17、are editorial to harmonize the text with other standards in this series. BS EN 13177:2010EN 13177:2010 (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 infor
18、mation 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 regulations concerning the use and/or the characteristics of this product remain
19、 in force. NOTE Conformity with the 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 Standard is subject to regulation or control by National Authorities. BS EN 13177:2010EN 13177:20
20、10 (E) 5 1 Scope This European Standard is applicable to synthetic methanol used for treatment of water intended for human consumption. It describes the characteristics of synthetic methanol and specifies the requirements and the corresponding test methods for synthetic methanol. Annex A gives infor
21、mation on its use in water treatment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment
22、s) applies. EN 1483, Water quality Determination of mercury EN 26595, Water quality Determination of total arsenic Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982) EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) ISO 3165, Samplin
23、g 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 indu
24、strial use Sampling Vocabulary ISO 8288, 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 sele
25、nium 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 3.1.4 empirical formula CH4O BS EN 13177:2010EN 13177:2010 (E) 6 3.1.5 chemical for
26、mula 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)
27、 Table 1 Density Concentration % mass fraction Density g/ml 90 0,821992 0,816394 0,8103 96 0,804898 0,799099,85 0,7936 100 0,79313.3.3 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
28、 Commercial Chemical Substances.BS EN 13177:2010EN 13177:2010 (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
29、) 3.3.9 citical 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 4.1 General This European Standard specifies the minimum purity req
30、uirements for methanol 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 the user and when
31、necessary to relevant authorities. NOTE 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 impurities and
32、additives used in the products not stated in the 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 materials leads to
33、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 contain a minimum of 99,85 % mass fraction pure synthetic methanol. 3)100 kPa = 1 bar.BS EN 13177:2010EN 13177:2010 (E) 8 4.3 Impu
34、rities and main by-products The propan-2-one content shall be less than 30 mg/kg of 100 % mass fraction methanol. NOTE The product contains traces of water and ethanol which do not affect its use in water treatment. 4.4 Chemical parameters The product shall conform to the requirements specified in T
35、able 2. Table 2 Chemical parameters Parameter Limit in 100 % mass fraction of methanol mg/kgArsenic (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 NOTE For parametric value
36、s 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 5.1.2.1.1 Mix the contents of the container to be sampled by shaking the container, by rolling it
37、 or by rocking it from side to side, taking care not to damage the container or spill any of the liquid. 5.1.2.1.2 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 have been
38、thoroughly mixed. Otherwise, proceed as described in 5.1.2.1.3. 5.1.2.1.3 Examine 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 us
39、ing 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 BS EN 13177:2010EN 13177:2010 (E) 9 to the ladle to drain off. If necessary, repeat
40、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 contain
41、er 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, wi
42、thdraw it from the container and allow any liquid adhering to 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. 5.1.3 Sampling from
43、tanks and tankers From each access point, take samples as follows: a) from the surface of the liquid, using a ladle as described in 5.1.2.2 ; b) from the bottom of the tank or tanker, using a sampling tube as described in 5.1.2.3 or using a specially designed bottom-sampling apparatus ; c) from one
44、or more positions, depending on the overall depth, between the bottom and the surface using a weighted sampling can. 5.2 Analysis 5.2.1 Methanol ( main product) 5.2.1.1 Principle The methanol content is determined by measuring the density using a digital density meter. The measuring principle of the
45、 digital density meter is based on the change of the frequency of a hollow oscillator when filled with different liquids. The mass and thus the density of the liquid changes this frequency due to a gross mass change of the oscillator caused by the introduction of the liquid. The oscillator consists
46、of a hollow elastic glass tube which is electronically excited in an undamped harmonic fashion. The density meter gives a direct read-out of the density result. 5.2.1.2 Apparatus 5.2.1.2.1 Digital density meter capable of measuring at (20 0,1) C. 5.2.1.2.2 Glass syringe, 2 ml capacity. 5.2.1.3 Proce
47、dure 5.2.1.3.1 Determination Introduce the required volume of methanol into the oscillator cell temperature regulated at (20 0,1) C. Record the density measurement from the digital density meter. BS EN 13177:2010EN 13177:2010 (E) 10 5.2.1.4 Expression of results Obtain the value of the methanol conc
48、entration (c1), as a percentage mass fraction from the measured density using Table 1. 5.2.1.5 Repeatability limit The absolute difference between two single test results, obtained under repeatability conditions, shall not be greater than the repeatability limit value, r, as calculated from the foll
49、owing equation : zr 00010,= (1) where z is the mean of the two results, expressed in % mass fraction NOTE Repeatability conditions are conditions where mutually independent test results are obtained with the same method on identical test material in the same laboratory by the same operator using the same equipment within short intervals of time. 5.2.2 Impurities 5.2.2.1 Propan-2-one content (CH3COCH3) 5.2.2.
