SIST EN ISO 20137:2017
(Main)Leather - Chemical tests - Guidelines for testing critical chemicals in leather (ISO 20137:2017)
Leather - Chemical tests - Guidelines for testing critical chemicals in leather (ISO 20137:2017)
ISO 20137:2017 gives guidelines to apply the available chemical test methods for leather. This information can be used by those involved in setting specifications for leather, especially for those parameters relating to restricted chemical substances.
Lists of restricted chemicals contain many substances that are not relevant to the leather industry. Those chemical substances that are not mentioned in this document do not need to be determined, thus avoiding unnecessary analytical costs.
Leder - Chemische Prüfverfahren - Richtlinien für die Prüfung kritischer Chemikalien in Leder (ISO 20137:2017)
Dieses Dokument enthält Leitlinien zur Anwendung der verfügbaren chemischen Prüfverfahren für Leder. Diese Information kann von allen verwendet werden, die am Erstellen von Spezifikationen für Leder und besonders für die Parameter von chemischen Stoffen, die Beschränkungen unterliegen, beteiligt sind.
Auflistungen von Beschränkungen unterliegenden Chemikalien enthalten viele Stoffe, die für die Leder-industrie keine Bedeutung haben. Die in diesem Dokument nicht genannten chemischen Stoffe brauchen nicht bestimmt werden, wodurch sich unnötige Analysekosten vermeiden lassen.
Cuir - Essais chimiques - Lignes directrices pour les essais de produits chimiques critiques sur le cuir (ISO 20137:2017)
ISO 20137:2017 fournit des lignes directrices pour l'application des méthodes d'essais chimiques disponibles pour le cuir. Ces informations peuvent être utilisées par les personnes chargées d'établir des spécifications pour le cuir, en particulier pour les paramètres liés aux substances chimiques faisant l'objet de restrictions.
De nombreuses substances figurant dans les listes de produits chimiques faisant l'objet de restrictions ne sont pas pertinentes pour l'industrie du cuir. Les substances chimiques qui ne sont pas mentionnées dans le présent document n'ont pas besoin d'être déterminées, ce qui évite des coûts analytiques inutiles.
Usnje - Kemijski preskusi - Smernice za preskušanje kritičnih kemikalij v usnju (ISO 20137:2017)
Ta dokument podaja smernice za uporabo razpoložljivih kemijskih preskusov za usnje. Te informacije lahko uporabljajo vpleteni v določanje specifikacij za usnje, še posebej tistih parametrov, ki se nanašajo na omejene kemijske snovi.
Seznam omejenih kemikalij vsebuje številne snovi, ki niso relevantne za usnjarsko industrijo. Teh kemijskih snovi, ki niso omenjene v tem dokumentu, ni treba določiti, tako da se prepreči nepotrebne stroške analize.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2017
8VQMH.HPLMVNLSUHVNXVL6PHUQLFH]DSUHVNXãDQMHNULWLþQLKNHPLNDOLMYXVQMX
,62
Leather - Chemical tests - Guidelines for testing critical chemicals in leather (ISO
20137:2017)
Leder - Chemische Prüfverfahren - Richtlinien für die Prüfung kritischer Chemikalien in
Leder (ISO 20137:2017)
Cuir - Essais chimiques - Lignes directrices pour les essais de produits chimiques
critiques sur le cuir (ISO 20137:2017)
Ta slovenski standard je istoveten z: EN ISO 20137:2017
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 20137
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2017
EUROPÄISCHE NORM
ICS 59.140.30
English Version
Leather - Chemical tests - Guidelines for testing critical
chemicals in leather (ISO 20137:2017)
Cuir - Essais chimiques - Lignes directrices pour les Leder - Chemische Prüfverfahren - Richtlinien für die
essais de produits chimiques critiques sur le cuir (ISO Prüfung kritischer Chemikalien in Leder (ISO
20137:2017) 20137:2017)
This European Standard was approved by CEN on 14 February 2017.
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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20137:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 20137:2017) has been prepared by Technical Committee 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 September 2017, and conflicting national standards
shall be withdrawn at the latest by September 2017.
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, 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 20137:2017 has been approved by CEN as EN ISO 20137:2017 without any modification.
INTERNATIONAL ISO
STANDARD 20137
IULTCS/IUC 36
First edition
2017-03
Leather — Chemical tests —
Guidelines for testing critical
chemicals in leather
Cuir — Essais chimiques — Lignes directrices pour les essais de
produits chimiques critiques sur le cuir
Reference numbers
ISO 20137:2017(E)
IULTCS/IUC 36:2017(E)
©
ISO 2017
ISO 20137:2017(E)
IULTCS/IUC 36:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
ISO 20137:2017(E)
IULTCS/IUC 36:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Chemical substances potentially found in leather . 2
4.1 Chemical test methods for substances used by the leather industry with no legal
restrictions for leather . 2
4.2 Chemical test methods for substances previously used by the leather industry . 3
4.3 Chemical test methods for substances not used by the leather industry. 3
Annex A (informative) Substances lists . 8
Bibliography .11
ISO 20137:2017(E)
IULTCS/IUC 36:2017(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 on 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 the following
URL: w w w . i s o .org/ iso/ foreword .html
This document was prepared by the Chemical Tests 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).
IULTCS, originally formed in 1897, is a world-wide 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.
iv © ISO 2017 – All rights reserved
ISO 20137:2017(E)
IULTCS/IUC 36:2017(E)
Introduction
This document was prepared in collaboration by IULTCS and by CEN/TC 289 Leather in order to provide
an overview of chemical test methods for the leather industry. This can be used by those involved
in setting specifications for leather, especially for those parameters relating to restricted chemical
substances.
Regulations restrict the use of certain chemicals in consumer products. The leather industry has
already taken actions by replacing the restricted substances or assuming the limits imposed by these
restrictions. Many brand name manufacturers require certificates of compliance from their suppliers
but too often these refer to analytical methods from other industries that are not suitable for use in
testing leather.
Through the collaboration of IULTCS and CEN/TC 289, a considerable number of leather specific EN and
ISO standard test methods have been developed for the chemical analysis of leather. The International
Standards are tested by inter-laboratory studies, have been proven scientifically valid and are subjected
to updating processes according to ISO protocols.
Chemical analysis of leather
Leather is a complex substrate to chemically analyse. After tanning, leather typically undergoes wet-
processing in aqueous media at low temperatures (<60 °C) and in an acid pH range of 3,5 to 5,5. The
characteristic properties of leather are achieved by mostly using a range of anionic retanning agents
(natural and/or synthetic), polymers and oils, as well as anionic dyes for achieving the required colour.
In analytical procedures, when leather is extracted, some of these substances can be removed and make
a complex matrix for the analysis. This should be considered when establishing quantification limits for
leather analyses. Too often unrealistic limits established in aqueous solutions, e.g. waste water analysis,
are quoted in specifications for leather.
This document gives an overview of those internationally accepted chemical test procedures established
specifically for leather.
ISO 20137:2017(E)
INTERNATIONAL STANDARD
IULTCS/IUC 36:2017(E)
Leather — Chemical tests — Guidelines for testing critical
chemicals in leather
1 Scope
This document gives guidelines to apply the available chemical test methods for leather. This
information can be used by those involved in setting specifications for leather, especially for those
parameters relating to restricted chemical substances.
Lists of restricted chemicals contain many substances that are not relevant to the leather industry.
Those chemical substances that are not mentioned in this document do not need to be determined, thus
avoiding unnecessary analytical costs.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 4045, Leather — Chemical tests — Determination of pH
ISO 5398-1, Leather — Chemical determination of chromic oxide content — Part 1: Quantification by
titration
ISO 5398-2, Leather — Chemical determination of chromic oxide content — Part 2: Quantification by
colorimetric determination
ISO 5398-3, Leather — Chemical determination of chromic oxide content — Part 3: Quantification by
atomic absorption spectrometry
ISO 539
...
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