Investigation on co-solvency, solvent effect, Hansen solubility parameter and preferential solvation of fenbufen dissolution and models correlation

•Solubility of fenbufen in different mono-solvents and mixture solvents was determined.•Preferential solvation of fenbufen in mixture solvents was investigated by IKBI method.•Molecular interactions were discussed by solvent effect using KAT-LSER model.•Use Hansen solubility parameter to evaluate the dissolve ability of solvents to fenbufen and co-solvency phenomenon.•Different thermodynamics models were used to correlate the solubility data.