In this work, the new set of the data on the excess heat capacity (C_P ^E), density (ρ) and excess volumes (V^E) for binary system n-propanol + water in the temperature range 278.15–358.15 K are presented. The concentration dependence of C_P ^E was correlated using Redlich–Kister equation. Obtained experimental data of C_P ^E were used to calculate excess enthalpies at various temperatures.