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, V(2)(o), obtained from the density data were used to derive the partial molar isobaric expansion at infinite dilution for thymidine at T = 298.15 K, E(2)(o){E(2)(o) = (partial derivative V(2)(o)/partial derivative T)(p)}. The partial molar heat capacity at infinite dilution for thymidine. C(p,2)(o), 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, K(S,2)(o), and the partial molar isothermal compression at infinite dilution, K(T,2)(o) {K(T,2)(o) = -(partial derivative V(2)(o)/partial derivative p)(T)}, have been derived from the sound speed data. The V(2)(o), E(2)(o), C(p,2)(o), and K(S,2)(o) results for thymidine are critically compared with those available from the literature. (C) 2011 Elsevier Ltd. All rights reserved.