Recently revived interest in indium chemistry has demonstrated the importance of electrochemical studies and data. Available electrochemical information is useful in evaluating the ease of reduction of indium compounds, the ease of oxidation of the metal, the relative ionic characteristics of the compounds in the pure conditions and in solution, and the quantitative estimation of the element. The quantity production of indium metal in a high state of purity is based primarily upon knowledge of its electrochemical characteristics. Information summarized here is also strongly indicative of the necessity for further fundamental investigations. 1Manuscript 84 unless CC License in place (see abstract). ) ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 141.211.4.224 Downloaded on 2015-06-26 to IP Vol. 93, No. ,1 ELECTROCHEMISTRY OF INDIUM 85 unless CC License in place (see abstract). ) ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 141.211.4.224 Downloaded on 2015-06-26 to IP