EXPERIMENTAL AND PREDICTED ISOBARIC VAPOR-LIQUID-EQUILIBRIUM FOR THE BINARY-SYSTEMS 1,2-DIBROMOETHANE WITH ISOMERIC BUTANOLS

A dynamic recirculating still was employed to measure isobaric vapour- liquid equilibrium at 40.0 and 101.3 kPa for the binary systems 1,2-di bromoethane with 1-butanol, 2-butanol, 2-methyl-1-propanol and 2-methy l-2-propanol, The experimental data were tested for thermodynamic cons istency and correlated with the Margules, Van Laar, Wilson, NRTL and U NIQUAC equations. All the systems show minimum temperature azeotropes, except 1, 2-dibromoethane with 2-methyl-2-propanol at 101.3 kPa. Pred ictions with the UNIFAC method mere also obtained.