High-pressure phase behaviour of the system (CO2Â +Â C.I. Disperse Orange 30 dye)

► The solubility of C.I. Disperse Orange 30 dye in SC-CO2 was experimentally studied. ► The measurements were performed using the static-synthetic method. ► The experiments were carried out in the temperature range from (303.15 to 333.15) K. ► The dye solubility in carbon dioxide was found to increase with increasing pressure. ► The experimental data were correlated using the Peng-Robinson equation of state.