Studies in chrome mordanting. II. The binding of chromium(III) cations to wool

Abstract

The reactions of a number of chromium(111) salts with wool have been investigated. It was found that chromium(111) was not displaced from wool by washing in water. Chromium(111) was bound to wool by the carboxyl groups. Other groups such as sulphonate and thiol groups also bound chromium(111) when these were present, but no evidence was found for binding by amino groups. A mechanism is suggested for the reaction of chromium(111) with wool.