High-pressure density and vapor-liquid equilibrium for the binary systems carbon dioxide-ethanol, carbon dioxide-acetone and carbon dioxide-dichloromethane

The estimated accuracy of the measured data was ±0.02 K for temperature, ±0.05 MPa for pressure, ±0.005 in mole fraction for liquid compositions and ±0.05 g/L for liquid density. Vapor-liquid equilibrium data and saturated-liquid density were obtained for the following systems: carbon dioxide-ethanol and carbon dioxide-acetone at 291.15, 303.15, 313.15 and 323.15 K and carbon dioxide-dichloromethane at 291.15, 303.15 and 311.15 K. For the latter system, high-pressure liquid density data were measured up to 18 MPa. The experimental data were correlated by both Peng-Robinson and SAFT equation of state. SAFT EOS gives better correlations of vapor-liquid data and accurate predictions of high-pressure density of the liquid phase.