Ethanol as a blending component for petrol - Determination of inorganic chloride - Potentiometric method

This standard specifies a potentiometric method for the determination of inorganic chloride content in ethanol from 4 mg/l to 30 mg/l. The chloride content is determined in aqueous solution after dissolution of the evaporation residue of the ethanol sample.
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 to determine the applicability of regulatory limitations prior to use.
NOTE   For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction.

Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des gehalts an anorganischen Chloriden aus dem Eindampfrückstand - Potentiometrisches Verfahren

Diese Norm legt ein Prüfverfahren für die Bestimmung des anorganischen Chloridgehaltes in Ethanol im Bereich von 4 mg/l bis 30 mg/l fest.
WARNUNG  Die Anwendung dieser Norm kann möglicherweise den Einsatz gefährlicher Materialien, Geräte oder Arbeitsschritte erfordern. Dieses Dokument gibt nicht vor, alle möglicherweise bei seiner Anwendung auftretenden Sicherheitsprobleme anzusprechen. Es liegt in der Verantwortung des Anwenders, vor der Anwendung dieser Norm zutreffende Verhaltensregeln zur Sicherheit und Gesundheit festzulegen und deren Übereinstimmung mit den Bestimmungen aller europäischen und nationalen Regelungen sicherzustellen.

Ethanol comme base de mélange a l'essence - Dosage du chlorure inorganique - Méthode potentiométrique

La présente norme spécifie une méthode potentiométrique de détection de la teneur en chlorures minéraux dans l’éthanol, pour des teneurs comprises entre 4 mg/l et 30 mg/l. La teneur en chlorure est déterminée en solution aqueuse après la dissolution du résidu d’évaporation de l’échantillon d’éthanol.
AVERTISSEMENT  L'utilisation de la présente Norme européenne peut impliquer l'intervention de produits, d'opérations et d'équipements à caractère dangereux. La présente norme européenne n'est pas censée aborder tous les problèmes de sécurité concernés par son usage. Il est de la responsabilité de l'utilisateur de consulter et d'établir des règles de sécurité et d'hygiène appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation.
NOTE   Pour les besoins de la présente Norme européenne, les termes « % (m/m) » et « % (V/V) » sont utilisés pour représenter respectivement la fraction massique et la fraction volumique.

Etanol kot komponenta za dodajanje motornemu bencinu – Določevanje anorganskega klorida – Potenciometrijska metoda

General Information

Status
Published
Publication Date
24-Oct-2007
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Oct-2007
Due Date
09-Dec-2007
Completion Date
25-Oct-2007

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ethanol as a blending component for petrol - Determination of inorganic chloride - Potentiometric methodMHEthanol comme base de mélange a l'essence - Dosage du chlorure inorganique - Méthode potentiométriqueEthanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung des gehalts an anorganischen Chloriden aus dem Eindampfrückstand - Potentiometrisches VerfahrenTa slovenski standard je istoveten z:EN 15484:2007SIST EN 15484:2007en75.160.20Liquid fuels71.080.60Alkoholi. EtriAlcohols. EthersICS:SLOVENSKI

STANDARDSIST EN 15484:200701-december-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15484August 2007ICS 71.080.60 English VersionEthanol as a blending component for petrol - Determination ofinorganic chloride - Potentiometric methodEthanol comme base de mélange à l'essence - Dosage duchlorure minéral - Méthode potentiométriqueEthanol zur Verwendung als Blendkomponente inOttokraftstoff - Bestimmung des Gehalts an anorganischenChloriden aus dem Eindampfrückstand -Potentiometrisches VerfahrenThis 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 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© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15484:2007: E

EN 15484:2007 (E) 2 Contents Page Foreword..............................................................................................................................................................3 1 Scope......................................................................................................................................................4 2 Normative references............................................................................................................................4 3 Principle..................................................................................................................................................4 4 Reagents and materials........................................................................................................................4 5 Apparatus...............................................................................................................................................5 6 Samples and sampling..........................................................................................................................5 7 Calibration..............................................................................................................................................6 7.1 Preparation of the blank test solution.................................................................................................6 7.2 Preparation of a 5,00 ml standard solution.........................................................................................6 7.3 Titration...................................................................................................................................................6 7.4 Standardisation of 10,00 ml potassium chloride solution.................................................................7 7.5 Calculation of concentration of silver nitrate solution......................................................................7 7.6 Calculation of value of blank test.........................................................................................................7 8 Sample analysis.....................................................................................................................................7 8.1 Preparation of the dry residue..............................................................................................................7 8.2 Preparation of the sample solution......................................................................................................7 8.3 Titration...................................................................................................................................................8 9 Calculation..............................................................................................................................................8 10 Expression of results............................................................................................................................8 11 Precision.................................................................................................................................................8 11.1 Repeatability, r.......................................................................................................................................8 11.2 Reproducibility, R..................................................................................................................................8 12 Test report..............................................................................................................................................9 Annex A (informative)

Measurement example...............................................................................................10 Annex B (informative)

Interferences................................................................................................................11 B.1 Introduction..........................................................................................................................................11 B.2 Other halogens.....................................................................................................................................11 B.3 Oxidizing agents..................................................................................................................................11 B.4 Ammonium and iron (III) salts............................................................................................................11 B.5 Cyanides, thiocyanates and sulphides.............................................................................................11 Bibliography......................................................................................................................................................12

EN 15484:2007 (E) 3 Foreword This document (EN 15484:2007) has been prepared by Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related produts 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. The method described in this document is based on ISO 6227 [1] and a method from a European Regulation on wine [2]. 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.

EN 15484:2007 (E) 4 1 Scope This standard specifies a potentiometric method for the determination of inorganic chloride content in ethanol from 4 mg/l to 30 mg/l. The chloride content is determined in aqueous solution after dissolution of the evaporation residue of the ethanol sample. 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 to determine the applicability of regulatory limitations prior to use. NOTE For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction. 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 Principle A weighed test portion of ethanol sample is evaporated on a water bath. The dry residue is dissolved in deionised water. Inorganic chloride content is determined by potentiometric titration either manually or using automated equipment. 4 Reagents and materials All reagents shall be of analytical reagent grade or of higher purity. 4.1 Acetone. 4.2 Nitric acid, ρ approximately 1,40 g/ml, about 68 % (m/m) solution. 4.3 Potassium nitrate, solution saturated at room temperature. 4.4 Silver nitrate solution 1, c (AgNO3) = 0,1 mol/l approximately. Dissolve 8,5 g of silver nitrate in a 500 ml one-mark volumetric flask, dilute to the mark and mix. Store in a dark glass bottle. 4.5 Silver nitrate solution 2, c (AgNO3) = 0,004 mol/l approximately. Prepare the solution at the time of use from silver nitrate solution 1 (4.4), diluting when required in a one-mark volumetric flask. 4.6 Potassium chloride standard reference solution 1, c (KCl) = 0,100 mol/l. Weigh 3,727 6 g of potassium chloride to the nearest 0,000 1 g. Potassium chloride was previously dried for 1 h at about 130 °C and cooled in a dessicator. Dissolve in a little water and transfer the solution quantitatively into a 500 ml one-mark volumetric flask. Dilute to the mark and mix. This solution shall not be kept for more than one month.

EN 15484:2007 (E) 5 4.7 Potassium chloride standard reference solution 2, c (KCl) = 0,004 mol/l. Prepare the solution at the time of use from the standard reference potassium chloride solution 1 (4.6), diluting when required in a one-mark volumetric flask. 4.8 Water, for analytical laboratory use, conforming to grade 3 of EN ISO 3696. 5 Apparatus 5.1 Evaporating dish, capaci

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