SIST EN ISO 5398-1:2018

Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration (ISO 5398-1:2018)

This document describes a method for the determination of chromium in aqueous solution obtained
from leather. This is an analysis for total chromium in leather; it is not compound specific or specific to
its oxidation state.
This method describes the determination of chrome by iodometric titration and is to be applicable to
chromium-tanned leathers which are expected to have chromic oxide contents in excess of 0,3 %. Two
different methods are described as alternatives for obtaining chromium in a suitable solution. It is
appropriate to use either method.

Leder - Chemische Bestimmung des Chromoxidgehalts - Teil 1: Gehaltsbestimmung durch Titration (ISO 5398-1:2018)

Dieses Dokument beschreibt ein Verfahren zur Bestimmung von Chrom in einer aus Leder erhaltenen wässrigen Lösung. Im vorliegenden Fall handelt es sich um eine Analyse des Gesamtchromgehaltes in Leder, die nicht verbindungsspezifisch oder spezifisch für die Oxidationsstufe ist.
Dieses Verfahren beschreibt die Bestimmung von Chrom durch iodometrische Titration und ist vorgesehen für mit Chrom gegerbte Leder, bei denen Chromoxidgehalte von mehr als 0,3 % vermutet werden. Es werden zwei unterschiedliche Verfahren als Alternative zum Erhalt von Chrom in einer geeigneten Lösung beschrieben. Beide Verfahren sind für die Anwendung geeignet.

Cuir - Dosage chimique de l'oxyde de chrome - Partie 1: Quantification par titrage (ISO 5398-1:2018)

Le présent document décrit une méthode permettant de doser le chrome dans une solution aqueuse obtenue à partir de cuir. C'est une analyse du chrome total dans le cuir; elle est non spécifique du composé chromé ou de l'état d'oxydation du chrome.
La présente méthode indique comment doser le chrome par titrage iodométrique; elle doit être applicable aux cuirs tannés au chrome, susceptibles de contenir de l'oxyde de chrome dans des proportions supérieures à 0,3 %. Deux méthodes différentes sont décrites pour obtenir du chrome dans une solution appropriée. Ces deux méthodes peuvent être appliquées.

Usnje - Kemijsko določevanje kromovega oksida - 1. del: Kvantitativna titracija (ISO 5398-1:2018)

Ta dokument opisuje metodo za določevanje kroma v vodni raztopini, pridobljeni iz usnja. To je analiza skupne vsebnosti kroma v usnju, pri čemer ne obravnava določene spojine ali določenega oksidacijskega stanja kroma.
Ta metoda opisuje določevanje kroma z iodometrično titracijo in se uporablja za usnje, ustrojeno s kromom, za katerega se pričakuje, da vsebuje več kot 0,3-odstotni delež kromovega oksida. Opisani sta dve različni metodi kot alternativni možnosti za pridobivanje kroma v ustrezni raztopini. Primerna je uporaba katere koli metode.

General Information

• Status: Published
• Public Enquiry End Date: 30-Oct-2017
• Publication Date: 11-Sep-2018
• ICS: 59.140.30 - Leather and furs
• Technical Committee: IUSN - Leather
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-Aug-2018
• Due Date: 03-Nov-2018
• Completion Date: 12-Sep-2018
• Ref Project: EN ISO 5398-1:2018 - Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration (ISO 5398-1:2018)

Relations

• Replaces: SIST EN ISO 5398-1:2009 - Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration (ISO 5398-1:2007)
• Effective Date: 01-Oct-2018
• Replaces: SIST EN ISO 5398-1:2009 - Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration (ISO 5398-1:2007)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 5398-1:2018
01-oktober-2018
1DGRPHãþD
SIST EN ISO 5398-1:2009
8VQMH.HPLMVNRGRORþHYDQMHNURPRYHJDRNVLGDGHO.YDQWLWDWLYQDWLWUDFLMD
,62
Leather - Chemical determination of chromic oxide content - Part 1: Quantification by
titration (ISO 5398-1:2018)
Leder - Chemische Bestimmung des Chromoxidgehalts - Teil 1: Gehaltsbestimmung
durch Titration (ISO 5398-1:2018)
Cuir - Dosage chimique de l'oxyde de chrome - Partie 1: Quantification par titrage (ISO
5398-1:2018)
Ta slovenski standard je istoveten z: EN ISO 5398-1:2018
ICS:
59.140.30 Usnje in krzno Leather and furs
SIST EN ISO 5398-1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 5398-1:2018

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SIST EN ISO 5398-1:2018


EN ISO 5398-1
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2018
EUROPÄISCHE NORM
ICS 59.140.30 Supersedes EN ISO 5398-1:2007
English Version

Leather - Chemical determination of chromic oxide content
- Part 1: Quantification by titration (ISO 5398-1:2018)
Cuir - Dosage chimique de l'oxyde de chrome - Partie 1: Leder - Chemische Bestimmung des Chromoxidgehalts
Quantification par titrage (ISO 5398-1:2018) - Teil 1: Gehaltsbestimmung durch Titration (ISO 5398-
1:2018)
This European Standard was approved by CEN on 8 June 2018.

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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5398-1:2018 E
worldwide for CEN national Members.

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SIST EN ISO 5398-1:2018
EN ISO 5398-1:2018 (E)
Contents Page
European foreword . 3

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SIST EN ISO 5398-1:2018
EN ISO 5398-1:2018 (E)
European foreword
This document (EN ISO 5398-1:2018) 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 January 2019, and conflicting national standards shall
be withdrawn at the latest by January 2019.
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 5398-1:2007.
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 5398-1:2018 has been approved by CEN as EN ISO 5398-1:2018 without any
modification.

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SIST EN ISO 5398-1:2018

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SIST EN ISO 5398-1:2018
INTERNATIONAL ISO
STANDARD 5398-1
IULTCS/IUC 8
Second edition
2018-06
Leather — Chemical determination of
chromic oxide content —
Part 1:
Quantification by titration
Cuir — Dosage chimique de l'oxyde de chrome —
Partie 1: Quantification par titrage
Reference numbers
ISO 5398-1:2018(E)
IULTCS/IUC 8:2018(E)
©
ISO 2018

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SIST EN ISO 5398-1:2018
ISO 5398-1:2018(E)
IULTCS/IUC 8:2018(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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SIST EN ISO 5398-1:2018
ISO 5398-1:2018(E)
IULTCS/IUC 8:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Sampling and sample preparation . 2
6 Reagents . 2
6.1 Wet oxidation method . 2
6.2 Alkaline fusion method . 2
6.3 Iodometric titration . 2
7 Apparatus . 2
8 Methods . 3
8.1 Preparation of analytical solution . 3
8.1.1 Wet oxidation method . 3
8.1.2 Alkaline fusion method . 3
8.2 Measurement of the aqueous solution . 3
9 Calculation and expression of results . 3
9.1 General . 3
9.2 Repeatability . 4
10 Test report . 4
Annex A (informative) Determination of water and other volatile matter . 5
© ISO 2018 – All rights reserved iii

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SIST EN ISO 5398-1:2018
ISO 5398-1:2018(E)
IULTCS/IUC 8:2018(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
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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 .or
...