The vapour-liquid equilibria of alpha-pinene, limonene and fenchone, and solubility behaviour of camphor were measured in supercritical carbon dioxide (SC-CO2) as a function of pressure and temperature using the static method. Experiments were carried out in the temperature range of 313-333 K and in the pressure range of 6-13 MPa. Experimental results were correlated by the Peng-Robinson equation of stale using conventional mixing rules with one interaction parameter.