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Total-pressure vapor-liquid equilibrium (VLE) data are reported at approximately 298, 348, and 398 K for each of four 1-chlorobutane binaries with ethyl acetate, acetonitrile, nitromethane, and acetone as the other component. The experimental PTx data were reduced to , 7,, and GE values by both the Mlxon-Gumowskl-Carpenter and the Barker methods; the Mixon et al. results were deemed better and are reported. Six Ge correlations were tested In the Barker data reduction; the five-constant Redllch-KIster equation gave the best results. Various equations of state were used to estimate the vapor-phase fugaclty coefficients; the Peng-Robinson results were used for the values reported.