Thermodynamics of aggregation of tri-n-butylamine hydrochloride in benzene solution

Abstract

The practical molal osmotic coefficients and molal activity coefficients of tri-n-butylamine hydrochloride in benzene solution were determined by vapour pressure osmometry over the concentration range 0.01–0.20 mol kg^–1 at 25, 37, 45, and 60 °C. The thermodynamic excess functions were evaluated and the non-ideal behaviour of the investigated system interpreted in terms of an association model which includes an extended series of multimers.