Binary Solid–Liquid Solubility Determination and Model Correlation of Furaneol in Different Pure Solvents

Abstract The solubility of furaneol in 2-butanol, isopropanol, acetone, cyclohexanone, acetonitrile, 1,4‑dioxane, methyl acetate, n -propyl acetate, chloroform, dichloromethane, and DMF was measured by the equilibrium method under atmospheric pressure at temperatures ranging from 278.15 to 313.15 K. The solubility in experimental pure solvents increased with the increase of temperature. The solubility order of furaneol in selected pure solvents was DMF > chloroform > dichloromethane > 1,4-dioxane > isopropanol > propyl acetate > methyl acetate > cyclohexanone > acetone ≈ 2-butanol > acetonitrile. The experimental data were correlated by four thermodynamic models (Wilson, NRTL, modified Apelblat, and λ h ), all of the models can give a satisfactory correlation. In addition, mixed thermodynamic properties of Gibbs energy, enthalpy and entropy of furaneol in selected solvents were calculated based on Wilson model.