System triethylamine–water: the equilibrium diagram and some physical properties

Abstract

The freezing-point diagram, determined by the method of thermal analysis, corroborates the existence of a dihydrate, first discovered by Pickering (1). Density and viscosity measurements at 16.0 °C, slightly below the critical solution temperature of 18.3 °C, show marked non-ideality. The negative volume of mixing reaches a maximum at 50 mole % and the maximum in the viscosity (4.00 relative to water) occurs at 12 mole %.