Determination of copper(I) with N-bromosuccinimide

Abstract

It has been found that N-bromosuccinimide readily and quantitatively oxidises aqueous solutions of copper(I) at room temperature and in the presence of dilute hydrochloric acid, the oxidising agent being irreversibly reduced to succinimide.

A procedure is suggested for the determination of copper(I) by titration with standard N-bromosuccinimide solution; the results obtained were found to be equally precise but more accurate than those given by the permanganate and complexometric methods.

Copper(II), after preliminary reduction, can also be determined by the suggested procedure, whether alone or admixed with copper(I).