PHASE-EQUILIBRIA ON 8 BINARY-MIXTURES

Vapor-liquid equilibria are reported for the following five systems at two temperatures each: 2-(2-(hexyloxy)ethoxy)ethanol + 1,2-ethanediol ; 2-(hexyloxy)ethanol + 1,2-propanediol; acetone cyanohydrin + acetone ; acetone cyanohydrin + hydrogen cyanide; propyl mercaptan + butane. T he system pressure and temperature were measured at several charge com positions along a given isotherm for each system. Equilibrium vapor-an d liquid-phase compositions were derived from the measured PTx data us ing the Soave equation of state to represent the vapor phase and the W ilson or the van Laar activity coefficient model to represent the liqu id phase. The solubility of oxygen in propylene oxide, nitrogen in pro pylene oxide, and methane in dichloromethane has been measured at thre e pressures at each of two or three temperatures.