prEN ISO 10195

Leather - Chemical determination of chromium(VI) content in leather - Thermal pre-ageing of leather and determination of hexavalent chromium (ISO 10195:2018)

This document specifies a thermal pre-ageing procedure for leather to obtain indications about the tendency to the formation of hexavalent chromium under specified conditions and the determination of hexavalent chromium according to ISO 17075-1 or ISO 17075-2.
This thermal pre-ageing procedure does not simulate any real condition in leather production or use.
It is applicable to all types of chromium tanned leather.

Leder - Chemische Bestimmung des Chrom(VI)-Gehalts in Leder - Thermische Voralterung von Leder und Bestimmung von sechswertigem Chrom (ISO 10195:2018)

Cuir - Détermination chimique de la teneur en chrome(VI) du cuir - Vieillissement thermique du cuir et détermination de la teneur en chrome hexavalent (ISO 10195:2018)

Usnje - Kemično določevanje kroma (VI) v usnju - Termično staranje usnja in določevanje šestvalentnega kroma (ISO 10195: 2018)

General Information

• Status: Not Published
• ICS: 59.140.30 - Leather and furs
• Technical Committee: CEN/TC 289 - Leather
• Drafting Committee: CEN/TC 289/WG 1 - Chemical test methods
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Due Date: 08-Jul-2021
• Completion Date: 08-Jul-2021
• Ref Project: oSIST prEN ISO 10195:2021 - Leather - Chemical determination of chromium(VI) content in leather - Thermal pre-ageing of leather and determination of hexavalent chromium (ISO 10195:2018)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 10195:2021
01-april-2021
Usnje - Kemično določevanje kroma (VI) v usnju - Termično staranje usnja in
določevanje šestvalentnega kroma (ISO 10195: 2018)

Leather - Chemical determination of chromium(VI) content in leather - Thermal pre-

ageing of leather and determination of hexavalent chromium (ISO 10195:2018)

Cuir - Détermination chimique de la teneur en chrome(VI) du cuir - Vieillissement

thermique du cuir et détermination de la teneur en chrome hexavalent (ISO 10195:2018)

Ta slovenski standard je istoveten z: prEN ISO 10195
ICS:
59.140.30 Usnje in krzno Leather and furs
71.060.10 Kemični elementi Chemical elements
oSIST prEN ISO 10195:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 10195:2021
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oSIST prEN ISO 10195:2021
INTERNATIONAL ISO
STANDARD 10195
IULTCS/IUC 41
First edition
2018-05
Leather — Chemical determination
of chromium(VI) content in leather
— Thermal pre-ageing of leather
and determination of hexavalent
chromium
Cuir — Détermination chimique de la teneur en chrome(VI) du cuir
— Vieillissement thermique du cuir et détermination de la teneur en
chrome hexavalent
Reference numbers
ISO 10195:2018(E)
IULTCS/IUC 41:2018(E)
ISO 2018
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oSIST prEN ISO 10195:2021
ISO 10195:2018(E)
IULTCS/IUC 41:2018(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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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oSIST prEN ISO 10195:2021
ISO 10195:2018(E)
IULTCS/IUC 41:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ................................................................................................................................................................................................................... 1

6 Procedure..................................................................................................................................................................................................................... 2

7 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Accuracy ................................................................................................................................................................................ 4

Annex B (informative) Natural ageing and development of hexavalent chromium ............................................5

© ISO 2018 – All rights reserved iii
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oSIST prEN ISO 10195:2021
ISO 10195:2018(E)
IULTCS/IUC 41:2018(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 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: 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, and the European Committee for Standardization (CEN) Technical Committee

CEN/TC 309, Footwear, the secretariat of which is held by AENOR, 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 2018 – All rights reserved
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oSIST prEN ISO 10195:2021
ISO 10195:2018(E)
IULTCS/IUC 41:2018(E)
Introduction

More than 80 % of leather is tanned using chromium(III) salts. The industry recommends

manufacturing procedures to avoid oxidative conditions that could allow the formation of traces of

hexavalent chromium [chromium(VI)] in the leather.

It is difficult to reproduce the natural ageing process. Therefore, in order to predict the tendency for

trace levels of hexavalent chromium to develop in chromium(III) tanned leather, a number of pre-ageing

tests have been proposed, some of which are being used in commercial leather specifications.

Following an inter-laboratory trial (see Annex A), thermal pre-ageing was selected as a suitable pre-

ageing test procedure. The method is presented in this document.

Information on the development of hexavalent chromium during the natural ageing of chromium(III)

tanned leather is given in Annex B.
© ISO 2018 – All rights reserved v
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oSIST prEN ISO 10195:2021
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oSIST prEN ISO 1
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