The equilibria between tri-n-octylamine and sulfuric acid

Abstract

Benzene solutions of tri-n-octylamine have been equilibrated with aqueous sulfuric acid at 25°. The amine sulfate and bisulfate species remain in the organic phase, and the data are interpreted on the basis of polymerization of these salts. Equilibrium constants for the formation of the normal sulfate and for sulfate-bisulfate exchange within the colloid are evaluated, and a hypothesized distribution of free amine between solvent and colloid is shown to lead to a relation of the form of a solubility product for the reaction between free amine and sulfuric acid.