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EN ISO 4048:2008

(Main)

Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO 4048:2008)

Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO 4048:2008)

ISO 4048:2008 specifies a method for the determination of the substances in leather which are soluble in dichloromethane. This method is applicable to all types of leather
ISO 4048:2008 includes two techniques for extraction of the fatty substances: 1) extraction using the Soxhlet apparatus; and 2) extraction using a pressurized extraction system. As the extraction is frequently done in conjunction with determination of the free fatty acid content of the leather, a suitable procedure for determination of the free fatty acids extracted by this method is included.
The apparatus and technique described in this method are also suitable for the extraction of leather by solvents other than dichloromethane (although the temperature conditions may need to be varied for high pressure extraction).

Leder - Chemische Prüfungen - Bestimmung der in Dichlormethan löslichen Substanzen und des freien Fettsäuregehalts (ISO 4048:2008)

Diese Internationale Norm legt ein Verfahren zur Bestimmung der in Dichlormethan löslichen Stoffe in Leder fest. Dieses Verfahren ist auf alle Lederarten anwendbar.
Nicht alle Fette und ähnlichen Stoffe können mit organischen Lösungsmitteln aus Leder extrahiert werden; sie können zum Teil löslich und zum Teil an das Leder gebunden sein. Andererseits können durch das Lösungsmittel Nichtfettstoffe, z. B. Schwefel und Imprägnierungsmittel, herausgelöst werden, die beide Schwierigkeiten bei der Bestimmung der Säurezahl und der Verseifungszahl der Fette verursachen.
Diese Internationale Norm enthält zwei Verfahren zur Extraktion von Fettstoffen:
1) Extraktion mit Soxhlet Gerät und
2) Extraktion mit Hochdrucksystem.
Da die Extraktion häufig zusammen mit der Bestimmung des Gehalts an freien Fettsäuren des Leders erfolgt, ist eine geeignete Durchführung zur Bestimmung der mit diesem Verfahren extrahierten freien Fettsäuren enthalten.
Das in diesem Verfahren beschriebene Gerät und die Durchführung sind auch für die Extraktion mit anderen Lösungsmitteln als Dichlormethan geeignet (obwohl es erforderlich sein kann, die Temperaturbedingungen bei der Hochdruckextraktion zu verändern).

Cuir - Essais chimiques - Dosage des matières solubles dans le dichlorométhane et des acides gras libres (ISO 4048:2008)

L'ISO 4048:2008 spécifie une méthode de dosage des substances contenues dans le cuir et solubles dans le dichlorométhane. Cette méthode est applicable à tous les types de cuir.
L'ISO 4048:2008 inclut deux techniques d'extraction des matières grasses: 1) extraction à l'aide d'un appareil de Soxhlet; et 2) extraction à l'aide d'un système d'extraction sous pression. L'extraction étant fréquemment effectuée parallèlement à la détermination de la teneur en acides gras libres du cuir, l'ISO 4048:2008 inclut également un mode opératoire de détermination des acides gras libres extraits selon cette méthode.
L'appareillage et le mode opératoire spécifiés dans la présente méthode sont également utilisables pour des extractions effectuées avec d'autres solvants que le dichlorométhane (même s'il peut être nécessaire de faire varier les conditions de température pour l'extraction à haute pression).

Usnje - Kemični preskusi - Določevanje topne snovi v diklormetanu in vsebnosti prostih maščobnih kislin (ISO 4048:2008)

General Information

Status
Withdrawn
Publication Date
14-Feb-2008
Withdrawal Date
17-Jul-2018
ICS
59.140.30 - Leather and furs
Technical Committee
CEN/TC 289 - Leather
Drafting Committee
CEN/TC 289 - Leather
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
18-Jul-2018
Ref Project
SIST EN ISO 4048:2008 - Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO 4048:2008)

Relations

Replaces
EN ISO 4048:1998 - Leather - Determination of matter soluble in dichloromethane (ISO 4048:1977)
Effective Date
22-Dec-2008
Replaced By
EN ISO 4048:2018 - Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO 4048:2018)
Effective Date
01-Aug-2018

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 4048:2008
01-maj-2008
1DGRPHãþD
SIST EN ISO 4048:2000
8VQMH.HPLþQLSUHVNXVL'RORþHYDQMHWRSQHVQRYLYGLNORUPHWDQXLQYVHEQRVWL
SURVWLKPDãþREQLKNLVOLQ ,62
Leather - Chemical tests - Determination of matter soluble in dichloromethane and free
fatty acid content (ISO 4048:2008)
Leder - Chemische Prüfungen - Bestimmung der in Dichlormethan löslichen Substanzen
und des freien Fettsäuregehalts (ISO 4048:2008)
Cuir - Essais chimiques - Dosage des matières solubles dans le dichlorométhane et des
acides gras libres (ISO 4048:2008)
Ta slovenski standard je istoveten z: EN ISO 4048:2008
ICS:
59.140.30
SIST EN ISO 4048:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN ISO 4048
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2008
ICS 59.140.30 Supersedes EN ISO 4048:1998
English Version
Leather - Chemical tests - Determination of matter soluble in
dichloromethane and free fatty acid content (ISO 4048:2008)
Cuir - Essais chimiques - Dosage des matières solubles Leder - Chemische Prüfungen - Bestimmung der in
dans le dichlorométhane et des acides gras libres (ISO Dichlormethan löslichen Substanzen und des freien
4048:2008) Fettsäuregehalts (ISO 4048:2008)
This European Standard was approved by CEN on 3 February 2008.
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, 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: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4048:2008: E
worldwide for CEN national Members.

---------------------- Page: 2 ----------------------

EN ISO 4048:2008 (E)
Contents Page
Foreword.3

2

---------------------- Page: 3 ----------------------

EN ISO 4048:2008 (E)
Foreword
This document (EN ISO 4048:2008) has been prepared by Technical Committee CEN/TC 289 "Leather", the
secretariat of which is held by UNI in collaboration with Technical Committee ISO/TC 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 2008, and conflicting national standards shall be withdrawn at
the latest by August 2008.
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.
This document supersedes EN ISO 4048:1998.
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, 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.
3

---------------------- Page: 4 ----------------------

INTERNATIONAL ISO
STANDARD 4048
IULTCS/IUC
4
Second edition
2008-02-15

Leather — Chemical tests —
Determination of matter soluble in
dichloromethane and free fatty acid
content
Cuir — Essais chimiques — Dosage des matières solubles dans le
dichlorométhane et des acides gras libres




Reference number
ISO 4048:2008(E)
IULTCS/IUC 4:2008(E)
©
ISO 2008

---------------------- Page: 5 ----------------------

ISO 4048:2008(E)
IULTCS/IUC 4:2008(E)
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