SIST EN ISO 3681:2019
(Main)Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:2018)
Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:2018)
This document specifies a titrimetric method for determining the esterified-acid content in binders for
paints and varnishes, free acids and acid anhydrides being necessarily included in the result obtained.
Because different binders vary in their resistance to saponification, this document is of limited
applicability. If necessary, completeness of saponification can be checked by repeating the test under
more severe conditions achieved by the use of longer saponification time, more concentrated potassium
hydroxide solution, or a higher-boiling alcohol as solvent.
Annex A specifies a procedure suitable for binders that saponify with difficulty.
The method is not applicable to those materials that show further reaction with alkalis beyond normal
saponification.
Bindemittel für Beschichtungsstoffe - Bestimmung der Verseifungszahl - Titrimetrisches Verfahren (ISO 3681:2018)
Dieses Dokument legt ein titrimetrisches Verfahren zum Bestimmen des Gehaltes an veresterten Säuren in Bindemitteln für Lacke und Anstrichstoffe fest. Freie Säuren und Säureanhydride werden dabei zwangsläufig ebenfalls erfasst.
Da sich Bindemittel in ihrer Verseifungsbeständigkeit unterscheiden, ist dieses Dokument nur begrenzt anwendbar. Falls erforderlich, kann geprüft werden, ob die Verseifung vollständig verlaufen ist, indem die Prüfung unter verschärften Bedingungen wiederholt wird. Solche Bedingungen können durch eine längere Verseifungsdauer, eine konzentriertere Kaliumhydroxidlösung oder einen höher siedenden Alkohol als Löse-mittel erreicht werden.
Anhang A legt ein geeignetes Verfahren für schwerverseifbare Bindemittel fest.
Das Verfahren ist nicht auf Stoffe anwendbar, die neben der Verseifung weitere Reaktionen mit Alkalien ein-gehen.
Liants pour peintures et vernis - Détermination de l'indice de saponification - Méthode titrimétrique (ISO 3681:2018)
Le présent document prescrit une méthode titrimétrique pour la détermination de la teneur en acides estérifiés des liants pour peintures et vernis tenant compte nécessairement des acides libres et des anhydrides d'acide.
En raison des variations de la résistance à la saponification des différents liants, le domaine d'application du présent document est limité. Si nécessaire, la saponification complète peut être vérifiée en recommençant l'essai dans des conditions plus strictes avec une durée de saponification plus longue, une solution d'hydroxyde de potassium plus concentrée ou un alcool à point d'ébullition plus élevé comme solvant.
L'Annexe A spécifie un mode opératoire adapté aux liants difficilement saponifiables.
La méthode n'est pas applicable aux produits présentant une réaction supplémentaire aux alcalis, après la saponification normale.
Veziva za barve in lake - Določevanje števila umiljenja - Titracijska metoda (ISO 3681:2018)
Ta dokument določa titracijsko metodo za določevanje vsebnosti esterificiranih kislin v vezivih in lakih, prostih kislin in anhidridov kislin, ki morajo biti vključeni v pridobljenih rezultatih.
Ker se različna veziva razlikujejo v odpornosti na umiljenje, je uporaba tega dokumenta
omejena. Po potrebi je mogoče popolnost umiljenja preveriti s ponovitvijo preskusa v
v težjih pogojih, kar se doseže z uporabo daljšega časa umiljenja, večjo koncentracijo raztopine kalijevega
hidroksida ali topilom v obliki alkohola z višjim vreliščem.
Dodatek A določa postopek, primeren za veziva, ki se težko umilijo.
Metoda se ne uporablja za tiste materiale, ki še naprej reagirajo z alkali, kar presega običajno
umiljenje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 3681:2019
01-marec-2019
1DGRPHãþD
SIST EN ISO 3681:1998
9H]LYD]DEDUYHLQODNH'RORþHYDQMHãWHYLODXPLOMHQMD7LWUDFLMVNDPHWRGD ,62
Binders for paints and varnishes - Determination of saponification value - Titrimetric
method (ISO 3681:2018)
Bindemittel für Beschichtungsstoffe - Bestimmung der Verseifungszahl - Titrimetrisches
Verfahren (ISO 3681:2018)
Liants pour peintures et vernis - Détermination de l'indice de saponification - Méthode
titrimétrique (ISO 3681:2018)
Ta slovenski standard je istoveten z: EN ISO 3681:2018
ICS:
87.060.20 Veziva Binders
SIST EN ISO 3681:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 3681:2019
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SIST EN ISO 3681:2019
EN ISO 3681
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2018
EUROPÄISCHE NORM
ICS 87.060.20 Supersedes EN ISO 3681:1998
English Version
Binders for paints and varnishes - Determination of
saponification value - Titrimetric method (ISO 3681:2018)
Liants pour peintures et vernis - Détermination de Bindemittel für Beschichtungsstoffe - Bestimmung der
l'indice de saponification - Méthode titrimétrique (ISO Verseifungszahl - Titrimetrisches Verfahren (ISO
3681:2018) 3681:2018)
This European Standard was approved by CEN on 9 November 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3681:2018 E
worldwide for CEN national Members.
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SIST EN ISO 3681:2019
EN ISO 3681:2018 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 3681:2019
EN ISO 3681:2018 (E)
European foreword
This document (EN ISO 3681:2018) has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
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 June 2019, and conflicting national standards shall be
withdrawn at the latest by June 2019.
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 ISO 3681:1998.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 3681:2018 has been approved by CEN as EN ISO 3681:2018 without any modification.
3
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SIST EN ISO 3681:2019
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SIST EN ISO 3681:2019
INTERNATIONAL ISO
STANDARD 3681
Fourth edition
2018-11
Binders for paints and varnishes —
Determination of saponification value
— Titrimetric method
Liants pour peintures et vernis — Détermination de l'indice de
saponification — Méthode titrimétrique
Reference number
ISO 3681:2018(E)
©
ISO 2018
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SIST EN ISO 3681:2019
ISO 3681:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 3681:2019
ISO 3681:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents . 2
6 Apparatus . 2
7 Sampling . 2
8 Preliminary test . 3
9 Procedure. 3
9.1 Number of determinations . 3
9.2 Test portion . 3
9.3 Determination . 3
9.4 Blank test . 4
10 Expression of results . 4
10.1 Calculation . 4
10.2 Precision . 4
11 Test report . 4
Annex A (normative) Binders which are saponifiable with difficulty — Determination of
saponification value . 6
© ISO 2018 – All rights reserved iii
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SIST EN ISO 3681:2019
ISO 3681:2018(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes.
This fourth edition cancels and replaces the third edition (ISO 3681:1996), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the normative references in Clause 2 have been updated;
— a reference to ISO 4618 for terms and definitions relating to paints and varnishes has been added to
Clause 3;
— the concentration of the phenolphthalein (5.4) solution has been lowered to 0,9 %.
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