The extraction of iron (III) from aqueous sulphate solutions by di(3,5,5-trimethylhexyl)amine—II: Distribution studies on benzene and chloroform

Abstract

Equations have been derived which describe the extraction of Fe(III) from aqueous sulphate solutions by the secondary amine salt di(3,5,5-trimethylhexyl)ammonium sulphate in terms of the equilibria involved. The results give additional evidence for the extraction of partially hydrolysed species such as FeOHSO 4 and (FeOHSO 4) 2. The extraction of Fe(III) deviates from the expected pattern at concentrations of amine sulphate above 0·008 M due to the formation of micelles by the amine sulphate in benzene solution.