Abstract
The thermodynamic functions—Gibbs energy, enthalpy, and entropy of solution—were evaluated from the solubilities of ibuprofen determined at several temperatures in the pure solvents: octanol, isopropyl myristate, chloroform, cyclohexane, and water. The organic solvent-saturated aqueous media and water-saturated organic solvents were also studied, except for cyclohexane. In aqueous media, the solubility was determined at pH = 7.4 and an ionic strength 0.15 mol-L−1 (physiological values). The excess Gibbs energy and the activity coefficients of the solutes were also determined. The solubilities are higher in organic media such as chloroform and octanol than in aqueous media and cyclohexane.
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Garzón, L.C., Martínez, F. Temperature Dependence of Solubility for Ibuprofen in Some Organic and Aqueous Solvents. J Solution Chem 33, 1379–1395 (2004). https://doi.org/10.1007/s10953-004-1051-2
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DOI: https://doi.org/10.1007/s10953-004-1051-2