EN ISO 17234-1:2010

SLOVENSKI STANDARD
01-november-2011
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SIST-TS CEN ISO/TS 17234:2004
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Leather - Chemical tests for determination of certain azo colourants in dyed leathers -
Part 1: Determination of certain aromatic amines derived from azo colorants (ISO 17234-
1:2010)
Leder - Chemische Prüfungen - Bestimmung bestimmter Azofarbstoffe in gefärbten
Ledern (ISO 17234-1:2010)
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 17234-1:2010)
Ta slovenski standard je istoveten z: EN ISO 17234-1:2010
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 17234-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2010
ICS 59.140.30 Supersedes CEN ISO/TS 17234:2003
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 17234-1:2010)
Cuir - Essais chimiques pour le dosage de certains Leder - Chemische Prüfungen zur Bestimmung bestimmter
colorants azoïques dans les cuirs teints - Partie 1: Dosage Azofarbstoffe in gefärbten Ledern - Teil 1: Bestimmung
de certaines amines aromatiques dérivées des colorants bestimmter aromatischer Amine aus Azofarbstoffen (ISO
azoïques (ISO 17234-1:2010) 17234-1:2010)
This European Standard was approved by CEN on 30 January 2010.

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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17234-1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 17234-1:2010) has been prepared by Technical Committee CEN/TC 289 "Leather",
the secretariat of which is held by UNI in collaboration with Technical Committee IULTCS "International Union
of Leather Technologists and Chemists Societies".
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 August 2010, and conflicting national standards shall be withdrawn at
the latest by August 2010.
This document supersedes CEN ISO/TS 17234:2003.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
INTERNATIONAL ISO
STANDARD 17234-1
IULTCS/IUC
20-1
First edition
2010-02-15
Leather — Chemical tests for the
determination of certain azo colorants in
dyed leathers —
Part 1:
Determination of certain aromatic amines
derived from azo colorants
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 number
ISO 17234-1:2010(E)
IULTCS/IUC 20-1:2010(E)
©
ISO 2010
ISO 17234-1:2010(E)
IULTCS/IUC 20-1:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 17234-1:2010(E)
IULTCS/IUC 20-1:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 General .1
4 Principle.3
5 Safety precautions .3
6 Apparatus.3
7 Reagents.4
8 Sampling and preparation of samples .4
9 Procedure.5
9.1 Degreasing .5
9.2 Reductive cleavage .5
9.3 Liquid-liquid extraction.5
9.4 Check of the analytical system .5
10 Calibration.5
11 Chromatographic analyses .6
11.1 General .6
11.2 Chromatographic analyses for quantitative and qualitative detection: High-performance
liquid chromatography (HPLC) .6
11.3 Chromatographic analyses for qualitative detection .6
12 Evaluation.7
13 Analysis report .8
14 Precision of the method.8
Bibliography.9

ISO 17234-1:2010(E)
IULTCS/IUC 20-1:2010(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 17234-1 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 289, Leather, in collaboration with the Chemical Test Commission of the International Union of
Leather Technologists and Chemists Societies (IUC Commission, IULTCS), 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. This edition differs slightly in the text compared with IUC 20.
IULTCS, originally formed in 1897, is a worldwide organization of professional leather societies to further the
advancement of leather science and technology. IULTCS has three Commissions, which are responsible for
establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an
international standardizing body for the preparation of test methods for leather.
This first edition of ISO 17234-1 cancels and replaces ISO/TS 17234:2003, which has been technically
revised.
ISO 17234 consists of the following parts, under the general title Leather — Chemical tests for the
determination of certain azo colorants in dyed leathers:
⎯ Part 1: Determination of certain aromatic amines derived from azo colorants
⎯ Part 2: Determination of 4-aminoazobenzene

iv © ISO 2010 – All rights reserved

ISO 17234-1:2010(E)
INTERNATIONAL STANDARD
IULTCS/IUC 20-1:2010(E)
Leather — Chemical tests for the determination of certain azo
colorants in dyed leathers —
Part 1:
Determination of certain aromatic amines derived from azo
colorants
1 Scope
This part of ISO 17234 specifies a method for determining the use of certain azo colorants which may release
certain aromatic amines.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 2418, Leather — Chemical, physical and mechanical and fastness tests — Sampling location
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
ISO 4044, Leather — Chemical tests — Preparation of chemical test samples
ISO 17234-2, Leather — Chemical tests for the determin
...