Thermodynamic model of solubility for CO2in dimethyl sulfoxide

Abstract The solubility of CO2 in dimethyl sulfoxide has been determined from 293.15 K to 313.15 K and partial pressure of CO2 from 5.56 kPa to 18.2 kPa. Based on the data obtained from the CO2 solubility experiments, a gas–liquid phase equilibrium model for CO2–DMSO system was proposed. The average relative deviation between the experimental data of equilibrium partial pressure of CO2 in DMSO and the corresponding data predicted by the model proposed is 4.85%, it shows that the agreement is satisfactory. Keywords: solubilitygas–liquid equilibriumsulfur dioxidecarbon dioxidemodel