Apparent Molar Volume, Adiabatic Compressibility, and Critical Micelle Concentration of Flucloxacillin Sodium in Aqueous NaCl Solutions at Different Temperatures

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• 作者：M. Roksana Khatun ; M. Monirul Islam ; Farhana Rahman Rima ; M. Nazrul Islam
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2016
• 出版时间：January 14, 2016
• 年：2016
• 卷：61
• 期：1
• 页码：102-113
• 全文大小：484K
• ISSN：1520-5134

文摘

Densities, ρ, and speeds of sound, u, of flucloxacillin sodium in water and aqueous NaCl solutions were measured at T = (298.15, 303.15, 308.15, 313.15, 318.15, and 323.15) K and atmospheric pressure using a high precision vibrating U-tube digital density and sound velocity analyzer (DSA 5000, Anton Paar, Austria). From the experimental data, apparent molar volume, ?_v, apparent molar adiabatic compressibility, ?_k, limiting apparent molar volume, ?_v⁰, limiting apparent molar adiabatic compressibility, ?_k⁰, and critical micelle concentration of flucloxacillin sodium were calculated. The limiting apparent molar volumes, ?_v⁰, were used to calculate Hepler’s constant. The results were interpreted in terms of solute–solvent and solute–solute interactions and structure making/breaking ability of the solute in the aqueous environment.