Phase equilibria of binary systems containing ethylene carbonate and an aromatic compound

Abstract

Boiling temperature data for binary systems of ethylene carbonate with benzene, toluene and p-xylene were measured at 500 mmHg. At lower temperatures ( T < 348 K) the system ethylene carbonate- p-xylene exhibits a liquid phase splitting and the liquid-liquid equilibrium was measured in the range 303-348 K. Phase equilibria data were used to obtain the activity coefficients. Solubility of solid ethylene carbonate in p-xylene was also measured at temperatures lower than the melting point of ethylene carbonate. These data were correlated by using an experimental value of enthalpy of fusion and activity coefficients obtained from liquid-liquid data.