prEN 15491
(Main)Ethanol as a blending component for petrol - Determination of total acidity - Colour indicator titration method
Ethanol as a blending component for petrol - Determination of total acidity - Colour indicator titration method
This document specifies a method for determining the total acidity, calculated as acetic acid, of ethanol to be used in petrol blends. It is applicable to ethanol having total acid contents of between 0,003 % (m/m) and 0,015 % (m/m).
NOTE For the purposes of this document, the terms "% (m/m)" and "% (V/V)" are used to represent the mass fraction and the volume fraction, respectively.
WARNING - Use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to take appropriate measures to ensure the safety and health of personnel prior to the application of the document, and to fulfil statutory and regulatory restrictions for this purpose.
Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung der Gesamtsäurezahl - Farbindikator-Titration
Dieses Dokument legt ein Prüfverfahren zur Bestimmung der Gesamtsäurezahl, angegeben als Essigsäure, von Ethanol in der Anwendung als Blendkomponente in Ottokraftstoff fest. Das Prüfverfahren ist anwendbar für Gesamtsäurezahlen im Bereich von 0,003 % (Massenanteil) bis 0,015 % (Massenanteil).
ANMERKUNG Für die Zwecke dieses Dokuments werden „% (Massenanteil)“ und „% (Volumenanteil)“ anstelle der Begriffe „Massenanteil in Prozent“ oder „Volumenanteil in Prozent“ verwendet.
WARNUNG - Die Anwendung dieses Dokumentes kann die Anwendung gefährlicher Stoffe, Arbeitsgänge und Geräte mit sich bringen. Dieses Dokument beansprucht nicht, alle damit verbundenen Sicherheitsprobleme zu behandeln. Es liegt in der Verantwortung des Anwenders dieses Dokuments, geeignete Sicherheits- und Gesundheitsschutzmaßnahmen vorzusehen und im Vorfeld die Anwendbarkeit von einschränkenden Vorschriften zu klären.
Ethanol comme base de mélange à l'essence - Détermination de l'acidité totale - Méthode de titrage par indicateur coloré
Le présent document spécifie une méthode pour la détermination de l’acidité totale, exprimée en équivalent d’acide acétique, dans l’éthanol utilisé comme constituant d’essence pour automobiles. Elle s’applique aux échantillons d’éthanol ayant une acidité totale comprise entre 0,003 % (m/m) et 0,015 % (m/m).
NOTE Pour les besoins du présent document, les termes “% (m/m)” et “% (V/V)” sont utilisés pour représenter la fraction massique et la fraction volumique, respectivement.
AVERTISSEMENT - L'utilisation du présent document peut impliquer l'intervention de produits, d'opérations et d'équipements à caractère dangereux. Ce document n'a pas la prétention d’aborder tous les problèmes de sécurité concernés par son usage. Il est de la responsabilité de l'utilisateur de ce document de prendre les mesures appropriées pour assurer la sécurité et préserver la santé du personnel avant l’application du document et de déterminer l'applicabilité de restrictions réglementaires ou toute autre à cette fin.
Etanol kot komponenta za dodajanje motornemu bencinu - Določanje skupne kislosti - Titracijska metoda z barvnim indikatorjem
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2024
Etanol kot komponenta za dodajanje motornemu bencinu - Določanje skupne
kislosti - Titracijska metoda z barvnim indikatorjem
Ethanol as a blending component for petrol - Determination of total acidity - Colour
indicator titration method
Ethanol zur Verwendung als Blendkomponente in Ottokraftstoff - Bestimmung der
Gesamtsäurezahl - Farbindikator-Titration
Ethanol comme base de mélange à l'essence - Détermination de l'acidité totale -
Méthode de titrage par indicateur coloré
Ta slovenski standard je istoveten z: prEN 15491
ICS:
71.080.60 Alkoholi. Etri Alcohols. Ethers
75.160.20 Tekoča goriva Liquid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2024
ICS 75.160.20 Will supersede EN 15491:2021
English Version
Ethanol as a blending component for petrol -
Determination of total acidity - Colour indicator titration
method
Ethanol comme base de mélange à l'essence - Ethanol zur Verwendung als Blendkomponente in
Détermination de l'acidité totale - Méthode de titrage Ottokraftstoff - Bestimmung der Gesamtsäurezahl -
par indicateur coloré Farbindikator-Titration
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 19.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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-CENELEC
Management Centre has the same status as the official versions.
CEN members 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15491:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Reagents and materials . 5
6 Apparatus . 6
7 Sampling and sample handling . 6
8 Procedure. 6
9 Calculation . 7
10 Expression of results . 7
11 Precision . 7
11.1 General . 7
11.2 Repeatability, r . 7
11.3 Reproducibility, R . 7
12 Test report . 8
Bibliography . 9
European foreword
This document (prEN 15491:2024) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 15491:2021.
In comparison with the previous edition EN 15491:2021, the following technical modification has been
made:
— the sparging step (8.4) has been made mandatory for clarification to the user and for better
comparison of the results. This has no effect on the method precision.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
1 Scope
This document specifies a method for determining the total acidity, calculated as acetic acid, of ethanol
to be used in petrol blends. It is applicable to ethanol having total acid contents of between
0,003 % (m/m) and 0,015 % (m/m).
NOTE For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent the mass
fraction and the volume fraction, respectively.
WARNING — Use of this document can involve hazardous materials, operations and equipment.
This document does not purport to address all of the safety problems associated with its use. It
is the responsibility of the user of this document to take appropriate measures to ensure the
safety and health of personnel prior to the application of the document, and to fulfil statutory
and regulatory restrictions for this purpose.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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)
EN ISO 3696, Water for analytical laboratory use — Specification and tes
...
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