Isobaric vapor-liquid equilibria of the p -xylene-1,1,1-trlchloroethane system were measured at 685-mmHg pressure. Activity coefficients were evaluated and correlated. Vapor pressures of 1,1,1-trlchloroethane In the range of 600-1750 mmHg are also reported.This second paper on the vapor-liquid equilibria of p-xylene-chloroethane systems presents data for the p-xylene-1,1, 1-trichloroethane system. Previous studies have presented