EN 15491:2021
(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 % (m/m) bis 0,015 % (m/m).
ANMERKUNG Für die Zwecke dieses Dokuments werden "% (m/m)" und "% (V/V)" 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 - Določevanje celotne kislosti - Titracijska metoda z barvnim indikatorjem
Ta evropski standard določa metodo za določevanje celotne kislosti etanola, izračunane kot ocetna kislina, ki se uporablja v bencinskih mešanicah. Uporablja se za etanol s skupno vsebnostjo kisline med 0,003 % (m/m) in 0,015 % (m/m).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST EN 15491:2007
Etanol kot komponenta za dodajanje motornemu bencinu - Določevanje celotne
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: EN 15491:2021
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.
EN 15491
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2021
EUROPÄISCHE NORM
ICS 75.160.20 Supersedes EN 15491:2007
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 European Standard was approved by CEN on 11 October 2021.
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-CENELEC 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-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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15491:2021 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 (EN 15491:2021) 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 May 2022, and conflicting national standards shall be
withdrawn at the latest by May 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15491:2007. It was originally prepared by CEN/TC 19's Ethanol Task
Force and is based on the Energy Institute standard IP 538 [1].
In comparison with the previous edition, the following technical modification has been made:
— the purging 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 given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
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
...
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