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Solvent effect and preferential solvation of cefpiramide in cosolvent plus water mixtures

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Abstract The preferential solvation parameters (δx1,3) of cefpiramide in two cosolvent mixtures of ethanol (1) + water (2), and isopropanol (1) + water (2) were derived from their available solubility data by means of… Click to show full abstract

Abstract The preferential solvation parameters (δx1,3) of cefpiramide in two cosolvent mixtures of ethanol (1) + water (2), and isopropanol (1) + water (2) were derived from their available solubility data by means of the inverse Kirkwood–Buff integrals method. For the studied systems, the values of δx1,3 were negative in the entire composition region for the isopropanol (1) + water (2) mixtures at 293.15 K and 298.15 K and for the ethanol (1) + water (2) mixtures at different temperatures studied, therefore the cefpiramide was preferentially solvated by water in the entire composition region. However in the isopropanol (1) + water (2) mixtures at 303.15 K with composition 0.45

Keywords: water; cosolvent; preferential solvation; water mixtures; isopropanol water

Journal Title: Journal of Molecular Liquids
Year Published: 2019

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