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ISO
ISO 4047:1977

ISO 4047:1977

Leather — Determination of sulphated total ash and sulphated water-insoluble ash

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General Information

Status :

Active

Standard Type : Main

Document No : ISO 4047:1977

Document Year : 1977

Pages : 2

Edition : 1

ICS : Leather and furs (59.140.30)

To determine the total mineral content, for example within the framework of a complete leather analysis, the inorganic substances can be ascertained by calculation or determined separately. The principle consists of the carbonization of the leather followed by treatment with sulphuric acid and ashing in an open crucible. The method is applicable to all types of leather.