This part of ISO 5398 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.
EN ISO 5398-1:2007 history
2018EN ISO 5398-1:2018 Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration
2007EN ISO 5398-1:2007 Leather - Chemical determination of chromic oxide content - Part 1: Quantification by titration (ISO 5398-1:2007)