A NEW TECHNIQUE FOR MEASURING SOLUBILITIES OF ORGANICS IN SUPERCRITICAL FLUIDS

A new experimental technique was developed to determine the solubiliti es of organics in supercritical fluids. Solubilities are determined by determining the weight of organic deposited on activated carbon when a stream of organic and carbon dioxide is passed through the carbon be d. The solubility of naphthalene in carbon dioxide at 308, 318, and 32 8 K at around 105 bar was determined and was found to be in good agree ment with the data reported in the literature. In addition, the method was used to determine the solubilities of hexachlorobenzene and penta chlorophenol in carbon dioxide at 298, 308, and 318 K at 111.5 bar. Th e solubility data were correlated using a simple model relating the so lute solubility and the solvent density.