Abstract
Reaction of mercury (II) with thioglycollic acid results in formation of mercury bis-thioacetate. Based on this reaction, a new volumetric analysis of mercury (II) was examined. The end point in potentiometric titration can be observed by the jamp in potentials between platinum and calomel electrodes but not by naked eye. A sharp color change was observed, however, by the addition of over 4 moles of sodium acetate and a small quantity of copper (II) to 1 mole of mercury (II) and the end point was easily observed. Addition of sodium chloride is necessary in the case of mercury (II) salts other than mercury (II) chloride. Determination of mercury (II) can be made easily, rapidly, and accurately by the present method.
