ELECTRODEPOSITION OF SILVER FROM THE IODIDE BATH*

Abstract

Silver has been electrodeposited on copper from a complex iodide solution. The deposits are white, dense and adherent, and the bath is comparable to the cyanide bath (without brightener) in respect of quality of deposit, electrode efficiency, current density and throwing power. The optimum conditions are: silver 20-40 g./L., iodide 400-600 g./L., c.d.0.2-1-6 amp./dm. 2 and temperature 26-60° C. Ammonium sulfamate and sodium thiosultate as additions give semi-bright deposits.

*This paper is based on part of the thesis submitted by R. Sadagopachari for the Associateship of the Indian Institute of Science.