Solubilities of benzene sulfonamide in supercritical CO2 in the absence and presence of cosolvent

► Solubility of benzene sulfonamide in SCCO2 was measured with and without coslovent. ► The measured data were correlated by using 10 semi-empirical models. ► The thermodynamic properties (ΔH, ΔHsub. ΔHsolv.) of solid solute were obtained. ► The effects of pressure and temperature were explained by molecular interaction. ► The enhancement factor of each cosolvent was calculated.