SIST EN 13176:2008
(Main)Chemicals used for treatment of water intended for human consumption - Ethanol
Chemicals used for treatment of water intended for human consumption - Ethanol
This European Standard is applicable to synthetic ethanol used for treatment of water intended for human consumption. It describes the characteristics of synthetic ethanol and specifies the requirements and the corresponding test methods for synthetic ethanol. It gives information on its use in water treatment.
NOTE This European Standard does not apply to anhydrous ethanol which is not used for drinking water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ethanol
Diese Europäische Norm gilt für synthetisches Ethanol zur Aufbereitung von Wasser für den menschlichen
Gebrauch. Sie beschreibt die Eigenschaften von synthetischem Ethanol und legt die Anforderungen sowie die
entsprechenden Prüfverfahren für synthetisches Ethanol fest. Sie enthält Angaben zu dessen Anwendung in
der Wasseraufbereitung.
ANMERKUNG Diese Europäische Norm gilt nicht für wasserfreies Ethanol, das nicht zur Aufbereitung von Trinkwasser
verwendet wird.
Produits chimiques pour le traitement de l'eau destinée à la consommation humaine - Ethanol
La présente Norme européenne s’applique à l’éthanol synthétique utilisé pour le traitement de l’eau destinée à
la consommation humaine. Elle décrit les caractéristiques de l’éthanol synthétique et spécifie les exigences et
les méthodes d’essai correspondantes. Elle donne des informations pour son emploi dans le traitement de
l’eau.
NOTE La présente Norme européenne ne s’applique pas à l’éthanol anhydre qui n’est pas utilisé pour le
traitement de l’eau potable.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Etanol
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - EtanolProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - EthanolProduits chimiques pour le traitement de l'eau destinée à la consommation humaine - EthanolChemicals used for treatment of water intended for human consumption - Ethanol71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 13176:2008SIST EN 13176:2008en,fr,de01-november-2008SIST EN 13176:2008SLOVENSKI
STANDARDSIST EN 13176:20011DGRPHãþD
SIST EN 13176:2008
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13176July 2008ICS 71.100.80Supersedes EN 13176:2000
English VersionChemicals used for treatment of water intended for humanconsumption - EthanolProduits chimiques pour le traitement de l'eau destinée à laconsommation humaine - EthanolProdukte zur Aufbereitung von Wasser für denmenschlichen Gebrauch - EthanolThis European Standard was approved by CEN on 28 June 2008.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, 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 United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13176:2008: ESIST EN 13176:2008
EN 13176:2008 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Description.5 4 Purity criteria.7 5 Test methods.8 6 Labelling - Transportation - Storage.15 Annex A (informative)
General information on synthetic ethanol.17 Annex B (normative)
General rules relating to safety.18 Bibliography.19
SIST EN 13176:2008
EN 13176:2008 (E) 3 Foreword This document (EN 13176:2008) 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 January 2009, and conflicting national standards shall be withdrawn at the latest by January 2009. 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 EN13176:2000. Significant technical difference between this edition and EN 13176:2000 is as follows: Deletion of reference to EU Directive 80/778/EEC of July 15, 1980 in order to take into account the latest Directive in force (see [1]). 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, Cyprus, Czech Republic, 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.
SIST EN 13176:2008
EN 13176:2008 (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 European Standard: a) this European 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; 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. NOTE Conformity with this European 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.
SIST EN 13176:2008
EN 13176:2008 (E) 5 1 Scope This European Standard is applicable to synthetic ethanol used for treatment of water intended for human consumption. It describes the characteristics of synthetic ethanol and specifies the requirements and the corresponding test methods for synthetic ethanol. It gives information on its use in water treatment. NOTE This European Standard does not apply to anhydrous ethanol which is not used for drinking 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 amendments) applies. EN 1233, Water quality - Determination of chromium - Atomic absorption spectrometric methods EN 1483, Water quality - Determination of mercury – Method using atomic absorption spectrometry 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, 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 9965, Water quality - Determination of selenium - Atomic absorption spectrometric method (hydride technique) 3 Description 3.1 Identification 3.1.1 Chemical name Ethanol. 3.1.2 Synonym or common name Ethyl alcohol. 3.1.3 Relative molecular mass 46,07 3.1.4 Empirical formula C2H60 SIST EN 13176:2008
EN 13176:2008 (E) 6 3.1.5 Chemical formula C2H5OH 3.1.6 CAS Registry Number 1) 64-17-5 3.1.7 EINECS reference 2) 200-57-86 3.2 Commercial form The product is available as colourless liquid. 3.3 Physical properties 3.3.1 Appearance The product is 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 %
Density g/ml 95 0,8114 95,1 0,8110 95,2 0,8106 95,3 0,8104 95,4 0,8100 95,5 0,8096 95,6 0,8092 95,7 0,8088 95,8 0,8084 95,9 0,8080 96 0,8076 3.3.3 Solubility in water Miscible.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 13176:2008
EN 13176:2008 (E) 7 3.3.4 Vapour pressure (at 20 °C) 5,81 kPa (for pure ethanol) 3.3.5 Boiling point at 100 kPa 3) 78,2 °C (for pure ethanol) 3.3.6 Melting point -112,3 °C (for pure ethanol) 3.3.7 Specific heat 2,399 kJ/(kg K) at 20 °C (for pure ethanol) 3.3.8 Viscosity, dynamic 1,2 mPa.s at 20 °C (for pure ethanol) 3.3.9 Critical temperature (for gas) 240,77 °C 3.3.10 Critical pressure (for gas) 6 400 kPa 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Ethanol is a polar and protic organic solvent. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for Ethanol 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 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 additives used in the product 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 lead(s) to significant quantities of impurities, by-products or additives being present, this shall be notified to the user.
3) 100 kPa = 1 bar SIST EN 13176:2008
EN 13176:2008 (E) 8 4.2 Composition of commercial product The product shall contain a mass fraction of at least 95 % synthetic ethanol.
NOTE The commercial product may contain up to a mass fraction of 5% water. 4.3 Impurities and main by-products The acetaldehyde content shall not exceed 100 mg/kg of pure ethanol. 4.4 Chemical parameters NOTE For the purpose of this European Standard, "chemical parameters" are those defined in the EU Directive 98/83/EC of 3 November 1998 (see [1]). The content of chemical parameters shall conform to the requirements specified in Table 2. Table 2 — Chemical parameters Parameter
Limit in mg/kg of
pure ethanol Arsenic (As) max. 1 Cadmium (Cd) max. 2 Chromium (Cr) max. 5 Mercury (Hg) max. 2 Nickel (Ni) max. 1 Lead (Pb) max. 2 Antimony (Sb) max. 1 Selenium (Se) max. 1 NOTE Cyanide does not exist in ethanol solvent medium. Pesticides and polycyclic aromatic hydrocarbons are not by-products of the manufacturing process. 5 Test methods 5.1 Sampling 5.1.1 Relevant Standards 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 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 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. SIST EN 13176:2008
EN 13176:2008 (E) 9 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. 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 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 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 Ethanol (main product) 5.2.1.1 Principle The ethanol 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 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 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 res
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