Solubilities of some aminoanthraquinone derivatives in supercritical carbon dioxide

The equilibrium solubilities of four recently synthesized aminoanthraquinones in supercritical CO2 have been measured over a temperature range of 308 to 358 K and a pressure range of 122 to 358 bar, using a simple static method. The solubility data were correlated by a semiempirical model. The calculated results show satisfactory agreement with the experimental data.