Thermodynamics of Mixing and Solvation of Ibuprofen and Naproxen in Propylene Glycol+Water Cosolvent Mixtures By using the van't Hoff and Gibbs equations, solubility data of ibuprofen (IBP) and naproxen (NAP) determined at several temperatures in propylene glycol (... YJ Manrique,DP Pacheco,F Mar...