Solubility Behavior and Thermodynamic Analysis of Bisphenol A in 14 Different Pure Solvents

The solubility of bisphenol A in 14 different pure solvents (N,N-dimethylformamide, formamide, acetone, 1,4-dioxane, cyclohexanone, ethyl acetate, methyl acetate, acetonitrile, ethanol, methanol, 1-propanol, 1-butanol, 2-propanol, and 2-butanol) was measured at T = (273.15–313.15) K under atmospheric pressure using a laser dynamic method. The experimental data of bisphenol A were correlated by modified Apelblat equation, λh equation, nonrandom two-liquid model and Wilson model, and the fitting results showed that the modified Apelblat equation gave the best correlation with the experimental results. The thermodynamic functions of bisphenol A in 14 pure solvents, such as dissolution enthalpy (ΔmixH), Gibbs energy (ΔmixG), and dissolution entropy (ΔmixS), were obtained from the Wilson model. The results of the ΔmixG < 0 and ΔmixH < 0 indicated that the dissolution process of bisphenol A in selected solvents was exothermic and spontaneous. The values of γ1∞ and γ1 were not close, indicating that bisphenol A in selected solvent solution systems was nonideal.