Solubilities of some 1-hydroxy-9,10-anthraquinone derivatives in supercritical carbon dioxide

The solubilities of seven recently synthesized 1-hydroxy-9,10-anthraquinone (AQ1) derivatives in supercritical carbon dioxide have been measured using a static method. The measurements were performed over the pressure range of 12.2-35.5 MPa at 308, 318, 338 and 348 K. The solubility data have been fitted using the model proposed by Bartle. The calculated results show satisfactory agreement with the experimental data. (C) 2004 Elsevier B.V. All rights reserved.