The partial molar heat capacity, expansion, isentropic, and isothermal compressions of thymidine in aqueous solution at T = 298.15 K

Solution densities have been determined for aqueous solutions of thymidine at T = (288.15, 298.15, 303.15, and 313.15) K. The partial molar volumes at infinite dilution, V2∘, obtained from the density data were used to derive the partial molar isobaric expansion at infinite dilution for thymidine at T = 298.15 K, E2∘{E2∘=(∂V2∘/∂T)p}. The partial molar heat capacity at infinite dilution for thymidine, Cp,2∘, at T = 298.15 K has also been determined. Sound speeds have been measured for aqueous solutions of thymidine at T = 298.15 K. The partial molar isentropic compression at infinite dilution, KS,2∘, and the partial molar isothermal compression at infinite dilution, KT,2∘{KT,2∘=-(∂V2∘/∂P)T}, have been derived from the sound speed data. The V2∘, E2∘, Cp,2∘, and KS,2∘ results for thymidine are critically compared with those available from the literature.

► Solution densities and sound speeds were measured for aqueous solutions of thymidine. ► Partial molar volumetric properties at infinite dilution and T = 298.15 K were derived. ► The partial molar isentropic and isothermal compressions are of opposite signs. ► The partial molar heat capacity for thymidine at infinite dilution was determined.