Total pressure vapor-liquid equilibrium data were measured for the following six binaries containing chlorobenzene: acetone + chlorobenzene at 313.15, 353.00, and 386.66 K; acetonitrile + chlorobenzene at 293.15, 343.15, and 393.15 K; ethyl acetate + chlorobenzene at 313.15, 353.15, and 393.15; chlorobenzene + ethylbenzene at 293.15 K; methanol + chlorobenzene at 293.15, 338.15, and 385.15 K; 1-pentene + chlorobenzene at 280.00, 320.00, and 360.00 K. The P, T, x data were reduced to y, γ, and GE values by the Mixon-Gumowski-Carpenter method. The vlrlal equation of state truncated after the second coefficient was used to calculate the vapor-phase fugacity coefficients. The Tsonopoulos correlation was used to predict the second vlrlal coefficients. © 1979, American Chemical Society. All rights reserved.