EN 13177:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - MetanolProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - MethanolProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - MéthanolChemicals used for treatment of water intended for human consumption - Methanol71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 13177:2002SIST EN 13177:2003en01-oktober-2003SIST EN 13177:2003SLOVENSKI
STANDARD



SIST EN 13177:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13177September 2002ICS 71.100; 71.100.80English versionChemicals used for treatment of water intended for humanconsumption - MethanolProduits chimiques utilisés pour le traitement de l'eaudestinée à la consommation humaine - MéthanolProdukte zur Aufbereitung von Wasser für denmenschlichen Gebrauch - MethanolThis 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13177:2002 ESIST EN 13177:2003



EN 13177:2002 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Description.53.1Identification.53.2Commercial form.63.3Physical properties.63.4Chemical properties.74Purity criteria.74.1Composition of commercial product.74.2Impurities and main by-products.74.3Chemical parameters.75Test methods.85.1Sampling.85.2Analysis.96Labelling - Transportation - Storage.146.1Means of delivery.146.2Risk and safety labelling according to the EU Directives .156.3Transportation regulations and labelling.156.4Marking.156.5Storage.16Annex A (informative)
General information on synthetic methanol.17Annex B (normative)
General rules relating to safety.19Bibliography.20SIST EN 13177:2003



EN 13177:2002 (E)3ForewordThis document EN 13177:2002 has been prepared by Technical Committee CEN/TC 164 "Water supply", thesecretariat 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 orby endorsement, at the latest by March 2003, and conflicting national standards shall be withdrawn at the latest byMarch 2003.Annex A is informative.Annex B is normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries 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.SIST EN 13177:2003



EN 13177:2002 (E)4IntroductionIn respect of potential adverse effects on the quality of water intended for human consumption, caused by theproduct covered by this standard:a) this standard provides no information as to whether the product can be used without restriction in any of theMember States of the EU or EFTA ;b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulationsconcerning the use and/or the characteristics of this product remain in force.SIST EN 13177:2003



EN 13177:2002 (E)51 ScopeThis European Standard is applicable to synthetic methanol used for treatment of water intended for humanconsumption. It specifies the characteristics of synthetic methanol and specifies the requirements and thecorresponding 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 MemberStates of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control byNational Authorities.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this Europeanstandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication 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 antimonycontent - 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 atomicabsorption 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 Description3.1 Identification3.1.1 Chemical nameMethanol.3.1.2 Synonym or common namesMethyl alcohol, carbinol.3.1.3 Relative molecular mass32,04.SIST EN 13177:2003



EN 13177:2002 (E)63.1.4 Empirical formulaCH4O.3.1.5 Chemical formulaCH3OH.3.1.6 CAS Registry Number 1)67-56-1.3.1.7 EINECS reference 2)200-65-96.3.2 Commercial formThe product is available as colourless liquid.3.3 Physical properties3.3.1 AppearanceThe product is a colourless liquid at 20 °C.3.3.2 DensityThe density at 20 °C is given in Table 1 (see [3] and [4]).Table 1 — DensityConcentrationmass fraction of methanol, %Densityg/ml900,8219920,8163940,8103960,8048980,799099,850,79361000,79313.3.3 Solubility in waterMiscible.3.3.4 Vapour pressure12,7 kPa at 20 °C (for pure methanol).
1)Chemical Abstracts Service Registry Number.2)European Inventory of Existing Commercial Chemical Substances.SIST EN 13177:2003



EN 13177:2002 (E)73.3.5 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 heat2,53 kJ /kg.K at 25 °C (for pure methanol).3.3.8 Viscosity, dynamic0,594 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 hardnessNot applicable.3.4 Chemical propertiesMethanol is a polar and protic organic solvent.4 Purity criteriaLimits have been given for impurities and chemical parameters where these are likely to be present in significantquantities from the current production process and raw materials. If a change in the production process or rawmaterials leads to significant quantities of other impurities or by-products being present, this shall be notified to theuser.4.1 Composition of commercial productThe product shall contain a minimum mass fraction of 99,85 % pure synthetic methanol.4.2 Impurities and main by-productsThe 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 parametersThe product shall conform to the requirements specified in Table 2.
3)100 kPa = 1 bar.SIST EN 13177:2003



EN 13177:2002 (E)8Table 2 — Chemical parametersParameterLimit in mass fraction of100 % methanolmg/kgArsenic (As)max.0,01Cadmium (Cd)max.0,01Chromium (Cr)max.0,01Mercury (Hg)max.0,01Nickel (Ni)max.0,01Lead (Pb)max.0,01Antimony (Sb)max.0,01Selenium (Se)max.0,01NOTEFor parametric values of methanol on trace metal content indrinking water (see [1]).5 Test methods5.1 Sampling5.1.1 GeneralObserve the general recommendations of ISO 3165 and take account of ISO 6206.5.1.2 Sampling from drums and bottles5.1.2.1 General5.1.2.1.1Mix the contents of the container to be sampled by shaking the container, by rolling it or by rocking itfrom 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 touse 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 thesurface as described in 5.1.2.2; otherwise, take samples as described in 5.1.2.3.5.1.2.2 Surface samplingTake a sample using a suitable ladle. Lower the ladle into the liquid until the rim is just below the surface, so thatthe surface layer runs into it. Withdraw the ladle just before it fills completely and allow any liquid adhering to theladle to drain off. If necessary, repeat this operation so that, when the other selected containers have beensampled in a similar manner, the total volume of sample required for subsequent analysis is obtained.5.1.2.3 Bottom samplingTake a sample using an open sampling tube, or a bottom-valve sampling tube, suited to the size of container andthe 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 thecontainer. Open the tube and move it rapidly so that the bottom of the tube traverses the bottom of the containerbefore the tube is filled. Close the tube, withdraw it from the container and allow any liquid adhering to the outsideof the tube to drain off.SIST EN 13177:2003



EN 13177:2002 (E)9When using a bottom-valve sampling tube, close the valve before lowering the tube into the container and thenproceed in a similar manner to that when using an open sampling tube.5.1.3 Sampling from tanks and tankersFrom 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 speciallydesigned bottom-sampling apparatus;c) from one or more positions, depending on the overall depth, between the bottom and the surface using aweighted sampling can.5.2 Analysis5.2.1 Methanol (main product)5.2.1.1 PrincipleThe methanol content is determined by measuring the density using a digital density meter.The measuring principle of the digital density meter is based on the change of the frequency of a hollow oscillatorwhen filled with different liquids. The mass and thus the density of the liquid changes this frequency due to a grossmass change of the oscillator caused by the introduction of the liquid.The oscillator consists of a hollow elastic glass tube which is electronically excited in an undamped harmonicfashion. The density meter gives a direct read-out of the density result.5.2.1.2 Apparatus5.2.1.2.1Digital density meter capable of measuring density at (20 ± 0,1) °C.5.2.1.2.2Glass syringe, 2 ml capacity.5.2.1.3 Procedure5.2.1.3.1 DeterminationIntroduce the required volume of methanol into the oscillator cell thermo regulated at (20 ± 0,1) °C. Record thedensity measurement from the digital density meter.5.2.1.4 Expression of resultsObtain the value of the methanol concentration (c1), as a mass fraction in %, from the measured density usingTable 1.5.2.1.5 Repeatability limitThe absolute difference between two single test results, obtained under repeatability conditions, shall not begreater than the repeatability limit, r, as calculated from the following equation:zr
00010,=whereSIST EN 13177:2003



EN 13177:2002 (E)10zis the mean of the two results, expressed as mass fraction in %.NOTERepeatability conditions are conditions where mutually independent test results are obtained with the same methodon identical test material in the same laboratory by the same operator using the same equipment within short intervals of time.5.2.2 Impurities5.
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