SVENSK STANDARD SS-EN 15489:2007 Fastställd 2007-09-03 Utgåva 1 Etanol som blandningskomponent i bensin Bestämning av vattenhalt Metod med Karl Fischer titrimetrisk coulometri Ethanol as a blending component for petrol Determination of water content Karl Fischer coulometric titration method ICS 71.080.60; 75.160.20 Språk: engelska Publicerad: oktober 2007 Copyright SIS. Reproduction in any form without permission is prohibited.
Provläsningsexemplar / Preview Europastandarden EN 15489:2007 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN 15489:2007. The European Standard EN 15489:2007 has the status of a Swedish Standard. This document contains the official English version of EN 15489:2007. Upplysningar om sakinnehållet i standarden lämnas av SIS, Swedish Standards Institute, telefon 08-555 520 00. Standarder kan beställas hos SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard. Postadress: SIS Förlag AB, 118 80 STOCKHOLM Telefon: 08-555 523 10. Telefax: 08-555 523 11 E-post: sis.sales@sis.se. Internet: www.sis.se
Provläsningsexemplar / Preview EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 15489 August 2007 ICS 71.080.60 English Version Ethanol as a blending component for petrol - Determination of water content - Karl Fischer coulometric titration method Ethanol comme base de mélange à l'essence - Détermination de la teneur en eau - Méthode de titrage coulométrique Karl Fischer Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des Wassergehaltes - Coulometrisches Titrationsverfahren nach Karl Fischer This European Standard was approved by CEN on 30 June 2007. 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 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 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 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 STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15489:2007: E
EN 15489:2007 (E) Provläsningsexemplar / Preview Contents Page Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Principle... 4 5 Reagents and materials... 4 6 Apparatus... 5 7 Sampling and sample handling... 5 8 Apparatus preparation... 5 9 Apparatus verification... 6 10 Procedure... 6 11 Calculation... 7 12 Expression of results... 7 13 Precision... 7 13.1 General... 7 13.2 Repeatability, r... 7 13.3 Reproducibility, R... 7 14 Test report... 8 Bibliography... 9 2
Provläsningsexemplar / Preview EN 15489:2007 (E) Foreword This document (EN 15489:2007) has been prepared by Technical Committee CEN/TC 19 Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin, the secretariat of which is held by NEN. 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 February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. This document was prepared by CEN/TC 19 s Ethanol Task Force and is based on the Energy Institute standard IP 539 [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 United Kingdom.. 3
EN 15489:2007 (E) Provläsningsexemplar / Preview 1 Scope This European Standard specifies a method for the direct determination of water in ethanol to be used in gasoline blends. It is applicable to ethanol having water contents in the range 0,039 % (m/m) to 0,500 % (m/m). NOTE For the purposes of this document, the term % (m/m) is used to represent the mass fraction. WARNING Use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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 ISO 3170, Petroleum liquids Manual sampling (ISO 3170:2004) EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 water content content of water determined by coulometric Karl Fischer procedure as given in this document 4 Principle A weighed test portion is injected into the titration vessel of a coulometric Karl Fischer apparatus in which iodine for the Karl Fischer reaction is generated coulometrically at the anode. When all the water has been titrated, excess iodine is detected by an electrometric end-point detector and the titration is terminated. Based on the stoichiometry of the reaction, one mole of iodine reacts with one mole of water, thus the quantity of water is proportional to the total integrated current according to Faraday's Law. 5 Reagents and materials Use only reagents of recognized analytical grade and water complying with the requirements of grade 3 of EN ISO 3696. 5.1 Xylene, water free Remove dissolved water from the xylene by adding approximately 100 g of activated molecular sieve (5.3) to approximately 2 l of xylene. Allow to stand overnight. 4