Densities for binary mixture 1,5-dibromopentane + heptane have been measured within the temperature range from 293 K to 313 K using a vibrating tube densimeter. The phase speeds of ultrasound have been measured with a pulse-echo-overlap apparatus. The heat capacities at constant pressure have been measured with a differential scanning calorimeter DSC III (Setaram). From those experimental data, the excess molar volumes, V-E, excess isobaric molar heat capacities, C-p(E), excess isentropic compressibilities, k(s)(E), excess isothermal compressibilities, k(T)(E), and excess ultrasonic speeds, u(E), were calculated.