Norm

NEN-EN-ISO 4048:2006 Ontw. en

Leer - Chemische beproevingen - Bepaling van in dichloormethaan oplosbare stoffen en vrije vetgehalte

  • Deze norm is ingetrokken sinds 29-02-2008

25,62

Over deze norm

Status Ingetrokken
Aantal pagina's 10
Gepubliceerd op 01-10-2006
Taal Engels
This international standard 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 Not all fatty and similar substances can be extracted from leather with organic solvents; they may be in part soluble and partly bound to the leather. On the other hand, the solvent can dissolve non-fatty substances, e.g. sulphur and impregnants, both of which cause difficulty in the determination of the acid value and saponification value of the fat. The standard includes two techniques for extraction of the fatty substances. In case of dispute soxhlet extraction shall be used. 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.

Details

ICS-code 59.140.30
Nederlandse titel Leer - Chemische beproevingen - Bepaling van in dichloormethaan oplosbare stoffen en vrije vetgehalte
Engelse titel Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content
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