SIST EN ISO 17234-1:2020

SLOVENSKI STANDARD
01-november-2020
Nadomešča:
SIST EN ISO 17234-1:2015
Usnje - Kemijski preskusi za določevanje nekaterih azo barvil na barvanem usnju -
1. del: Določevanje nekaterih aromatskih aminov, izvirajočih iz azo barvil (ISO
17234-1:2020)
Leather - Chemical tests for the determination of certain azo colorants in dyed leathers -
Part 1: Determination of certain aromatic amines derived from azo colorants (ISO 17234-
1:2020)
Leder - Chemische Prüfungen zur Bestimmung bestimmter Azofarbstoffe in gefärbten
Ledern - Teil 1: Bestimmung bestimmter aromatischer Amine aus Azofarbstoffen (ISO
17234-1:2020)
Cuir - Essais chimiques pour le dosage de certains colorants azoïques dans les cuirs
teints - Partie 1: Dosage de certaines amines aromatiques dérivées des colorants
azoïques (ISO 17234-1:2020)
Ta slovenski standard je istoveten z: EN ISO 17234-1:2020
ICS:
59.140.30 Usnje in krzno Leather and furs
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 17234-1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 59.140.30 Supersedes EN ISO 17234-1:2015
English Version
Leather - Chemical tests for the determination of certain
azo colorants in dyed leathers - Part 1: Determination of
certain aromatic amines derived from azo colorants (ISO
17234-1:2020)
Cuir - Essais chimiques pour le dosage de certains Leder - Chemische Prüfungen zur Bestimmung
colorants azoïques dans les cuirs teints - Partie 1: bestimmter Azofarbstoffe in gefärbten Ledern - Teil 1:
Dosage de certaines amines aromatiques dérivées des Bestimmung bestimmter aromatischer Amine aus
colorants azoïques (ISO 17234-1:2020) Azofarbstoffen (ISO 17234-1:2020)
This European Standard was approved by CEN on 27 July 2020.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17234-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17234-1:2020) has been prepared by Technical Committee ISO/IULTCS
"International Union of Leather Technologists and Chemists Societies" in collaboration with Technical
Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI.
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 March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
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 17234-1:2015.
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, 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.
Endorsement notice
The text of ISO 17234-1:2020 has been approved by CEN as EN ISO 17234-1:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 17234-1
IULTCS
IUC 20-1
Third edition
2020-08
Leather — Chemical tests for
the determination of certain azo
colourants in dyed leathers —
Part 1:
Determination of certain aromatic
amines derived from azo colourants
Cuir — Essais chimiques pour le dosage de certains colorants
azoïques dans les cuirs teints —
Partie 1: Dosage de certaines amines aromatiques dérivées des
colorants azoïques
Reference numbers
ISO 17234-1:2020(E)
IULTCS/IUC 20-1:2020(E)
©
ISO 2020
ISO 17234-1:2020(E)
IULTCS/IUC 20-1:2020(E)
© ISO 2020
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
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Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 17234-1:2020(E)
IULTCS/IUC 20-1:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 1
5 Principle . 3
6 Safety precautions . 3
7 Apparatus . 3
8 Reagents . 4
9 Sampling and preparation of samples . 5
10 Procedure. 5
10.1 Degreasing . 5
10.2 Reductive cleavage . 5
10.3 Liquid-liquid extraction . 5
10.4 Check of the analytical system . 6
11 Chromatographic analyses . 6
12 Calibration . 6
13 Evaluation . 6
13.1 Calculation of amine in the sample . 6
13.2 Reliability of the method . 7
14 Test report . 7
Annex A (informative) Chromatographic analyses . 9
Annex B (informative) Reliability of the method .13
Annex C (informative) Assessment guide — Interpretation of analytical results .14
Annex D (informative) Procedure for liquid/liquid extraction without diatomaceous earth .20
Bibliography .23
ISO 17234-1:2020(E)
IULTCS/IUC 20-1:2020(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 the Chemical Test Commission of the International Union of Leather
Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of
which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement). This method is technically similar to the method in IUC 20, which was declared an
official method at the IULTCS Delegates meeting on 31st May 2003 in Cancun, Mexico.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather soci
...