SIST EN ISO 4098:2018
(Main)Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter (ISO 4098:2018)
Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter (ISO 4098:2018)
ISO 4098 | IULTCS/IUC 6:2018 specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter.
ISO 4098 | IULTCS/IUC 6:2018 is applicable to all leather types. The result obtained by this analysis depends on factors such as:
- the degree to which the leather is ground;
- the extraction temperature;
- the extraction period;
- the ratio of leather to water.
To obtain comparable results, it is consequently imperative that test conditions be accurately reproduced.
In all cases, any ammonium salts in the filtrate are included as part of the water-soluble matter and are then decomposed on ignition. Thus they contribute towards the result for water-soluble organic substances. The concentration of the ammonium salts can be determined in the filtrate separately if required.
Leder - Chemische Prüfungen - Bestimmung wasserlöslicher Substanzen, wasserlöslicher anorganischer Substanzen und wasserlöslicher organischer Substanzen (ISO 4098:2018)
Diese Internationale Norm legt ein Verfahren zur Bestimmung wasserlöslicher Substanzen, wasserlöslicher anorganischer Substanzen und wasserlöslicher organischer Substanzen fest.
Dieses Verfahren gilt für alle Lederarten. Das durch diese Untersuchung erhaltene Ergebnis hängt von Faktoren ab, wie zum Beispiel:
dem Grad, bis zu dem das Leder zerkleinert wird;
der Extraktionstemperatur;
der Extraktionsdauer;
dem Leder-Wasser-Verhältnis.
Zum Erhalt vergleichbarer Ergebnisse ist es folglich zwingend erforderlich, dass die Bedingungen stets genau gleich sind.
In jedem Fall werden in dem Filtrat vorhandene Ammoniumsalze als Teil der wasserlöslichen Substanz einbezogen und anschließend beim Glühen zersetzt. Auf diese Weise tragen sie zum Ergebnis der wasserlöslichen organischen Substanzen bei. Die Konzentration an Ammoniumsalzen kann, sofern gefordert, in dem Filtrat getrennt bestimmt werden.
Cuir - Essais chimiques - Dosage des matières solubles dans l'eau, des matières inorganiques solubles dans l'eau et des matières organiques solubles dans l'eau (ISO 4098:2018)
ISO 4098 | IULTCS/IUC 6:2018 spécifie une méthode de dosage des matières solubles dans l'eau, des matières inorganiques solubles dans l'eau et des matières organiques solubles dans l'eau.
Cette méthode est applicable à tous les types de cuir. Le résultat obtenu lors de ce dosage dépend de facteurs tels que:
- le degré de broyage du cuir;
- la température d'extraction;
- la durée de l'extraction;
- la teneur en humidité du cuir.
Par conséquent, pour obtenir des résultats comparables, il est impératif d'utiliser des conditions d'essai exactement identiques.
Dans tous les cas, les sels d'ammonium éventuellement présents dans le filtrat sont pris en compte lors du dosage des matières solubles dans l'eau, ils sont ensuite décomposés lors de la combustion. Ils contribuent ainsi au résultat obtenu pour la teneur en matières organiques solubles dans l'eau. La concentration des sels d'ammonium dans le filtrat peut être déterminée séparément si nécessaire.
Usnje - Kemijski preskusi - Določevanje v vodi topnih snovi, v vodi topnih anorganskih snovi in v vodi topnih organskih snovi (ISO 4098:2018)
Ta dokument podaja metodo za določevanje v vodi topnih snovi, v vodi topnih anorganskih snovi in v vodi topnih organskih snovi.
Uporablja se za vse vrste usnja. Rezultat, pridobljen na podlagi te analize, je odvisen od naslednjih dejavnikov:
– stopnja, do katere je usnje zmleto;
– temperatura izločanja;
– čas izločanja;
– razmerje med usnjem in vodo.
Za pridobitev primerljivih rezultatov je zato zelo pomembno, da so preskusni pogoji natančno ponovljeni.
V vsakem primeru so amonijeve soli v filtratu vključene kot del v vodi topnih snovi, ki se nato razgradijo ob vžigu. Tako prispevajo k rezultatu v vodi topnih organskih snovi. Po potrebi je koncentracijo amonijevih soli mogoče določiti ločeno od filtrata.
General Information
- Status
- Published
- Public Enquiry End Date
- 02-Mar-2017
- Publication Date
- 11-Sep-2018
- 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
Relations
- Effective Date
- 01-Oct-2018
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
SIST EN ISO 4098:2018 specifies internationally recognized chemical test methods for the determination of water-soluble matter, water-soluble inorganic matter, and water-soluble organic matter in leather. This standard is applicable to all types of leather and is used in both research and industrial settings to assess and compare leather quality. Developed by IULTCS and standardized throughout Europe, this method is critical for accurately characterizing leather's chemical properties, supporting product quality, safety, and regulatory compliance in the leather industry.
Key Topics
Scope and Applicability
- Suitable for all leather products, including finished goods.
- The procedure's results are influenced by sample preparation, extraction temperature and period, and leather-to-water ratio.
- Standardization is crucial for comparability; precise adherence to the test method is required for consistent results.
Testing Procedure
- Involves extraction of ground leather using controlled conditions.
- Quantification of water-soluble matter via drying and weighing.
- Further classification of water-soluble matter into inorganic (ash) and organic fractions by ashing at a specified temperature.
Specific Considerations
- Ammonium salts present in the extract are counted as water-soluble matter and, upon ignition, are accounted for in the organic matter total unless separately quantified.
- Recommendations are provided for sample weight, extraction volumes, and adjustment in case of low inorganic content.
Reporting
- Requires clear documentation of the methodology, conditions, and any deviations.
- Results should be reported to one decimal place and indicate if calculated on a dry-substance basis.
Applications
Quality Control
- Determines the chemical purity and processing quality of leather materials.
- Enables manufacturers and suppliers to ensure compliance with industry standards and buyer specifications.
Regulatory Compliance
- Used for meeting regional and global regulatory requirements regarding leather composition.
- Supports traceability and transparency in supply chains, particularly for industries that mandate chemical testing of materials.
Research and Development
- Assists in the development of new leather treatments, processes, or products by providing detailed insights into water-soluble fractions.
- Allows comparison of different tanning and finishing methods for their impact on leather chemistry.
Consumer Assurance
- Provides measurable indicators of leather cleanliness and resistance to chemical degradation, supporting claims of durability and safety.
Related Standards
- ISO 2418 - Leather - Chemical, physical and mechanical and fastness tests - Sampling location.
- ISO 3696 - Water for analytical laboratory use - Specification and test methods.
- ISO 4044 - Leather - Chemical tests - Preparation of chemical test samples.
- ISO 4048 - Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content.
- ISO 4684 - Leather - Chemical tests - Determination of volatile matter.
These standards are referenced within SIST EN ISO 4098:2018 for guidance on sample collection, preparation, and related chemical analyses, ensuring harmonized testing procedures across laboratories and manufacturers.
Keywords: leather chemical testing, water-soluble matter in leather, ISO 4098:2018, leather quality control, water-soluble inorganic matter, water-soluble organic matter, IULTCS, EN ISO 4098, chemical analysis of leather, leather standards.
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Frequently Asked Questions
SIST EN ISO 4098:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter (ISO 4098:2018)". This standard covers: ISO 4098 | IULTCS/IUC 6:2018 specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter. ISO 4098 | IULTCS/IUC 6:2018 is applicable to all leather types. The result obtained by this analysis depends on factors such as: - the degree to which the leather is ground; - the extraction temperature; - the extraction period; - the ratio of leather to water. To obtain comparable results, it is consequently imperative that test conditions be accurately reproduced. In all cases, any ammonium salts in the filtrate are included as part of the water-soluble matter and are then decomposed on ignition. Thus they contribute towards the result for water-soluble organic substances. The concentration of the ammonium salts can be determined in the filtrate separately if required.
ISO 4098 | IULTCS/IUC 6:2018 specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter. ISO 4098 | IULTCS/IUC 6:2018 is applicable to all leather types. The result obtained by this analysis depends on factors such as: - the degree to which the leather is ground; - the extraction temperature; - the extraction period; - the ratio of leather to water. To obtain comparable results, it is consequently imperative that test conditions be accurately reproduced. In all cases, any ammonium salts in the filtrate are included as part of the water-soluble matter and are then decomposed on ignition. Thus they contribute towards the result for water-soluble organic substances. The concentration of the ammonium salts can be determined in the filtrate separately if required.
SIST EN ISO 4098:2018 is classified under the following ICS (International Classification for Standards) categories: 59.140.30 - Leather and furs. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 4098:2018 has the following relationships with other standards: It is inter standard links to SIST EN ISO 4098:2006, SIST ISO 3696:1995, SIST EN 1457-1:2012, SIST EN 4530-002:2024, SIST-TP CEN ISO/TR 20879:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 4098:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2018
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SIST EN ISO 4098:2006
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Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic
matter and water-soluble organic matter (ISO 4098:2018)
Leder - Chemische Prüfungen - Bestimmung wasserlöslicher Substanzen,
wasserlöslicher anorganischer Substanzen und wasserlöslicher organischer Substanzen
(ISO 4098:2018)
Cuir - Essais chimiques - Dosage des matières solubles dans l'eau, des matières
inorganiques solubles dans l'eau et des matières organiques solubles dans l'eau (ISO
4098:2018)
Ta slovenski standard je istoveten z: EN ISO 4098:2018
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 4098
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2018
EUROPÄISCHE NORM
ICS 59.140.30 Supersedes EN ISO 4098:2006
English Version
Leather - Chemical tests - Determination of water-soluble
matter, water-soluble inorganic matter and water-soluble
organic matter (ISO 4098:2018)
Cuir - Essais chimiques - Dosage des matières solubles Leder - Chemische Prüfungen - Bestimmung
dans l'eau, des matières inorganiques solubles dans wasserlöslicher Substanzen, wasserlöslicher
l'eau et des matières organiques solubles dans l'eau anorganischer Substanzen und wasserlöslicher
(ISO 4098:2018) organischer Substanzen (ISO 4098:2018)
This European Standard was approved by CEN on 23 March 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 4098:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4098:2018) 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 4098:2006.
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 4098:2018 has been approved by CEN as EN ISO 4098:2018 without any modification.
INTERNATIONAL ISO
STANDARD 4098
IULTCS - IUC 6
Second edition
2018-02
Leather — Chemical tests —
Determination of water-soluble
matter, water-soluble inorganic matter
and water-soluble organic matter
Cuir — Essais chimiques — Dosage des matières solubles dans
l'eau, des matières inorganiques solubles dans l'eau et des matières
organiques solubles dans l'eau
Reference numbers
ISO 4098:2018(E)
IULTCS - IUC 6:2018(E)
©
ISO 2018
ISO 4098:2018(E)
IULTCS - IUC 6:2018(E)
© 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
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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 4098:2018(E)
IULTCS - IUC 6:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents . 2
6 Apparatus . 2
7 Sampling and preparation of samples . 3
8 Procedure. 3
8.1 General . 3
8.2 Water-soluble matter . 3
8.3 Water-soluble inorganic matter . 3
9 Remarks on the procedure . 3
10 Calculation and expression of results . 4
11 Test report . 4
12 Repeatability . 5
ISO 4098:2018(E)
IULTCS - IUC 6:2018(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
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Attention is drawn to the possibility that some of the elements of this document may be the subject of
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