Evaluation of certain pharmaceuticals with hexamminecobalt(III)-tricarbonatocobaltate(III). Part 2. Potentiometric determination of some antimony(III) compounds
Abstract
The analytical utility of hexamminecobalt(III)-tricarbonatocobaltate(III) for the oxidimetric determination of some antimony(III) compounds has been studied. The procedure involves titration of the analyte in acidic medium with a 0.005 M solution of the reagent; the detection of the end-point is accomplished potentiometrically using a platinum-calomel electrode system. The method is simple, rapid and accurate. The results obtained are comparable to those obtained by the official methods.