Acid Decomposition of Metal Xanthate Complexes and Their Stability Constants

Abstract

Abstract The formation of 1 : 1 complexes was confirmed by means of the kinetic method. The acid decomposition of xanthate was delayed by the addition of metal ions because of the decrease in the concentration of ethyl xanthic acid in an equilibrium. By using the rate equation, the stability constants were found to be (1.0±0.2)×104, (1.7±0.4)×10 and (2.5±0.4)×104 for Cd(EX)+, Zn(EX)+, and Pb(EX)+ respectively.