Abstract
The enthalpies of solution and dilution of aqueous solutions of sodium ibuprofen (NaIBP) with concentrations of m < 1.4 mol/kg water are measured at 293.15, 298.15, 308.15, and 318.5 K using an isoperibolic calorimeter. The heat capacity of NaIBP in the temperature range of 273.15–528.15 K is measured using a DSC 204 F1 Phoenix differential scanning calorimeter (NETZSCH, Germany). The virial coefficients of the enthalpies of aqueous solutions of NaIBP are derived in terms of the Pitzer model, and the thermodynamic properties of both the solutions and the solution components are calculated over the range of compound solubility. The variation in these characteristics as a function of concentration and temperature is analyzed.
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Original Russian Text © N.G. Manin, G.L. Perlovich, 2015, published in Zhurnal Fizicheskoi Khimii, 2015, Vol. 89, No. 4, pp. 658–667.
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Manin, N.G., Perlovich, G.L. Thermodynamic properties of aqueous solutions of sodium ibuprofen at 293.15–318.15 K. Russ. J. Phys. Chem. 89, 644–653 (2015). https://doi.org/10.1134/S0036024415040160
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DOI: https://doi.org/10.1134/S0036024415040160