Mass transfer characteristics were determined for countercurrent extraction in a spray column with supercritical carbon dioxide solvent. Feeds were 5 and 1(I vol% aqueous ethanol and iso-propanol at 25∼65℃ and 6.89∼15.1 MPa. Results obtained in a 22 rpm inside diameter column showed enhanced extraction efficiencies over comparable liquid-liquid systems. The models based on conventional liquid-liquid extraction were modified to correlate overall mass transfer coefficients for supercritical conditions. The constant value in the model of measuring individual mass transfer coefficient was influenced by the density of carbon dioxide and the system used.