EN ISO 3681:1998

Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:1996)

Describes 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. Does not apply to those binders that show further reaction with alkalis beyond normal saponification. Replaces the second edition.

Bindemittel für Beschichtungsstoffe - Bestimmung der Verseifungszahl - Titrimetrisches Verfahren (ISO 3681:1996)

Diese internationale Norm legt ein titrimetrisches Verfahren zum Bestimmen des Gehaltes an veresterten Säuren in Bindemitteln für Lacke und Anstriffstoffe fest. Freie Säuren und Säureanhyydride werden dabei zwangsläufig ebenfalls erfaßt. Da sich Bindemittel in ihrer Verseifungsbeständigkeit unterscheiden, ist diese internationale Norm nur begrenzt anwendbar. Falls erforderlich, sollte geprüft werden, ob die Verseifung vollständig verlaufen ist, indem die Prüfung unter verschärften Bedingungen wiederholt wird.

Liants pour peintures et vernis - Détermination de l'indice de saponification - Méthode titrimétrique (ISO 3681:1996)

Veziva za barve in lake - Določanje števila umiljenja - Titracijska metoda (ISO 3681:1996)

General Information

• Status: Withdrawn
• Publication Date: 21-Apr-1998
• Withdrawal Date: 11-Dec-2018
• ICS: 87.060.20 - Binders
• Technical Committee: CEN/TC 139 - Paints and varnishes
• Drafting Committee: CEN/TC 139 - Paints and varnishes
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 12-Dec-2018
• Ref Project: SIST EN ISO 3681:1998 - Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:1996)

Relations

• Replaced By: EN ISO 3681:2018 - Binders for paints and varnishes - Determination of saponification value - Titrimetric method (ISO 3681:2018)
• Effective Date: 19-Dec-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 3681:1998
01-avgust-1998
9H]LYD]DEDUYHLQODNH'RORþDQMHãWHYLODXPLOMHQMD7LWUDFLMVNDPHWRGD,62

Binders for paints and varnishes - Determination of saponification value - Titrimetric
method (ISO 3681:1996)
Bindemittel für Beschichtungsstoffe - Bestimmung der Verseifungszahl - Titrimetrisches
Verfahren (ISO 3681:1996)
Liants pour peintures et vernis - Détermination de l'indice de saponification - Méthode
titrimétrique (ISO 3681:1996)
Ta slovenski standard je istoveten z: EN ISO 3681:1998
ICS:
87.060.20 Veziva Binders
SIST EN ISO 3681:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3681:1998

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SIST EN ISO 3681:1998

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SIST EN ISO 3681:1998

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SIST EN ISO 3681:1998

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SIST EN ISO 3681:1998

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SIST EN ISO 3681:1998
INTERNATIONAL
STANDARD
Third edition
1996-06-01
Binders for paints and varnishes -
Determination of saponification value -
Titrimetric method
Liants pour peintures et vernis - Dktermination de I’indice de
saponification - Mkthode titrim&rique
Reference number
IS0 3681 :I 996(E)

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SIST EN ISO 3681:1998
IS0 3681:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide fed-
eration of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be rep-
resented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. IS0 col-
laborates closely with the International Electrotechnical Commission (IEC)
on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are cir-
culated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 3681 was prepared by Technical Committee
lSO/TC 35, Paints and varnishes, Subcommittee SC 10, Test methods for
binders for paints and varnishes.
This third edition cancels and replaces the second edition (IS0 3681:1983),
which has been technically and editorially revised. The main change is that
the saponification value is no longer related to 1 g of non-volatile matter of
the product but to 1 g of the product itself.
Annex A forms an integral part of this International Standard.
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be repro-
duced or utilized in any form or by any means, electronic or mechanical, including photo-
copying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland

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SIST EN ISO 3681:1998
INTERNATIONAL STANDARD 0 IS0 IS0 3681:1996(E)
Binders for paints and varnishes - Determination of
saponification value - Titrimetric method
IS0 8421984, Raw materials for paints and var-
1 Scope
nishes - Sampling.
This International Standard specifies a titrimetric
IS0 3696: 1987, Water for analytical labora tory use -
method for determining the esterified-acid content in
Specification and test methods.
binders for paints and varnishes, free acids and acid
anhydrides being necessarily included in the result ob-
tained.
3 Definitions
Because different binders vary in their resistance to
saponification, this International Standard is of limited
For the purposes of this International Standard, the
applicability. If necessary, completeness of saponifi-
following definitions apply.
cation may be checked by repeating the test under
more severe conditions achieved by the use of longer
3.1 saponification: The formation of the alkali metal
saponification time, more concentrated potassium hy-
salts of derivatives of organic acids.
droxide solution, or a higher-boiling alcohol as solvent.
3.2 saponification value: The number of milligrams
Annex A specifies a procedure suitable for binders
of potassium hydroxide (KOH) required for the saponi-
that saponify with difficulty.
fication of 1 g of the product tested.
The method is not applicable to those materials that
show further reaction with alkalis beyond normal sap-
onification.
4 Principle
After a preliminary test to determine the
...