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ISO 4047:1977

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

Nov 1, 1977

General information

90.20     Jul 15, 2026

ISO

IULTCS

International Standard

59.140.30  

French   English  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 4047:1977
90.20 Standard under periodical review
Jul 15, 2026

National adoptions

SRPS EN ISO 4047:2012  
ISS

Leather - Determination of sulphated total ash and sulphated water-insoluble ash (ISO 4047:1977)

90.93   Standard confirmed

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