LIQUID-GAS PHASE-EQUILIBRIUM IN THE CELLOSOLVE CYCLOHEXANONE SYSTEM

Equilibrium in the Cellosolve-cyclohexanone system under isothermal co nditions at 50-degrees-C has been investigated. This system is charact erized by positive deviation from ideality, leading to the formation o f an azeotropic mixture. The composition of the azeotropic mixture was measured using a rectifying column. The azeotropic mixture was found to contain 83.2 and 97.7 mole % of Cellosolve at 50 and 80-degrees-C, respectively. At atmospheric pressure an azeotropic mixture does not e xist. The equilibrium data obtained were treated by the thermodynamic Herington-Redlich-Kister method.