The densities and viscosities of clopidogrel hydrogen sulfate + methanol and clopidogrel hydrogen sulfate + ethanol have been measured at the temperatures (278.15, 283.15, 288.15, 293.15, 298.15, 303.15, 308.15, and 313.15) K. The experimental data of densities were calculated with the Vogel-Tamman-Fulcher equation, and viscosities were analyzed with linear fit to temperature.