investigation the solubility of anthraquinone violet 3rn in supercritical carbon dioxide

The solubility of anthraquinone violet 3rn (av3rn) was experimentally measured in supercritical co2 (sc-co2) at different temperatures (308 – 338k) and pressures (10 - 34mpa)# the solubility of av3rn varied in the range of 4#7 × 10−7 to 5#5 × 10−6 mole fractions# obtained solubility data was correlated with four well-known density-based models; chrastil, bartle et al#, garlapati-madras and khansary et al# empirical models developed by khansary et al# along with garlapati-madras models exhibited the highest accordance and a proper agreement with experimental data# also, it was shown that av3rn evaporation is an endothermic process while its solvation is an exothermic process#