DS/EN ISO 4048-2008

Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content

DS/EN ISO 4048-2008 发布历史

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. sulfur and impregnants, both of which cause difficulty in the determination of the acid value and saponification value of the fat.This International Standard includes two techniques for extraction of the fatty substances: 1) extraction using the Soxhlet app

DS/EN ISO 4048-2008由丹麦标准化协会 DK-DS 发布于 2008-04-11，并于 2008-04-11 实施。

DS/EN ISO 4048-2008在国际标准分类中归属于: 59.140.30 皮革和裘皮。

DS/EN ISO 4048-2008的历代版本如下：

• 2008年04月11日 DS/EN ISO 4048-2008

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标准号

DS/EN ISO 4048-2008

发布日期

2008年04月11日

实施日期

2008年04月11日

废止日期

无

国际标准分类号

59.140.30

发布单位

DK-DS

被代替标准

DS/EN ISO 4048-1999

适用范围

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. sulfur and impregnants, both of which cause difficulty in the determination of the acid value and saponification value of the fat.This International Standard includes two techniques for extraction of the fatty substances: 1) extraction using the Soxhlet app