Supercritical fluid extraction is a potential technique for the decontamination of soils and other solid materials containing residual pesticides. The solubilities of pesticides in supercritical carbon dioxide are being measured as part of a program in which this extraction technology is being investigated. The solubilities of methoxychlor, endrin, and lindane in supercritical CO2, as measured using a dynamic saturation technique, are reported at pressures between 100 and 220 bar and at two temperatures, 313.1 and 331.1 K. These chemicals have relatively high solubilities with the measured Values ranging from 7.36 x 10(-6) to 2.69 x 10(-3) mole fraction. The solubilities exhibit a clear dependence on the solvent density, and this has been used to provide a simple and precise correlation of the data.