Abstract

Soluble complex-formation of mercury(II) thiocyanate has been studied oscillometrically. The titration of mercury(II) nitrate with thiocyanate gives one inflection corresponding to the formation of Hg(SCN) 2, while in the reverse titration the formation of Hg(SCN) + is also indecated. The method is useful for a rapid determination of very small quantities of mercury or thiocyanate in highly dilute solutions. The titrations can be effected in presence of nitric acid provided its total acidity in the system does not exceed about 1 300 N. Further Work on the mercury(II) -halide and mercury(II)-cyanide reactions is in progress.

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