ISO 5398-1:2018 PDF

Scope: This document describes a method for the determination of chromium in aqueous solution obtained from leather. This is an analysis for total chromium in leather; it is not compound specific or specific to its oxidation state. This method describes the determination of chrome by iodometric titration and is to be applicable to chromium-tanned leathers which are expected to have chromic oxide contents in excess of 0,3 %. Two different methods are described as alternatives for obtaining chromium in a suitable solution. It is appropriate to use either method.

ISO 5398-1:2018 Referenced Document

ISO 2418:2017 Leather - Chemical, physical and mechanical and fastness tests - Sampling location
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
ISO 4044:2017 Leather - Chemical tests - Preparation of chemical test samples
ISO 4047:1977 Leather; Determination of sulphated total ash and sulphated water-insoluble ash
ISO 4684:2005 Leather - Chemical tests - Determination of volatile matter

2018 ISO 5398-1:2018 Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration
2007 ISO 5398-1:2007 Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration