Solid–liquid phase equilibrium and dissolution properties of ethyl vanillin in pure solvents

• Solubility of ethyl vanillin in eight pure solvents were determined by a static analytical method.
• The experimental solubility data of ethyl vanillin were correlated and analyzed by four thermodynamic models.
• Dissolution thermodynamic properties of ethyl vanillin were calculated and discussed.

The solubility of ethyl vanillin (EVA) in eight pure solvents were determined in different temperature ranges from (273.15 to 318.15) K by a static analytical method. In the temperature ranges investigated, it was found that the solubility of EVA in all the selected solvents increased with the rising of temperature. Furthermore, four thermodynamic models were used to correlate the experimental solubility data and the calculation results showed that selected models can be used to correlate the solubility data with satisfactory accuracy. Finally, the dissolution thermodynamic properties, including dissolution Gibbs energy, dissolution enthalpy and dissolution entropy of EVA in the eight selected solvents were calculated.