N-TRIDECANOYL-N''-SULFONYLHYDRAZINES - POTENTIAL COLLECTORS FOR IONIC FLOTATION OF NON-FERROUS METALS
The physicochemical properties (solubility, acid-base properties, resistance to hydrolysis in alkaline media, surface activity and kinetics of foaming) of N-tridecanoyl-N'-sulfonylhydrazines (TSH) are needed to evaluate their use as reagents for processes of ion concentration of non-ferrous metals. The processes of complexing of TSH with Cu (II) ions in ammonia media have been studied. It is shown that the reagents in solutions form complex compounds with the ratios [Cu (II)]:[TSH] = 1:1 and 1:2. The complexes of TSH with Cu (II) ions have been prepared and isolated. The quantitative characteristics of the complexation equilibrium are found - the values of solubility products ofprecipitation and the equilibrium constant of the complexation reaction.