Isothermal liquid-liquid equilibrium data for two ternary systems of epichlorohydrin + methanol + water and allyl chloride + methanol + water were experimentally determined at 273.15 K +/- 0.1 K. These two systems exhibit the type-I behavior of LLE. These systems have not been previously investigated at this temperature, but there was motivation to study these as part of a novel process, which is under development. These systems were studied in order to develop separation strategies for a novel epoxidation process for the manufacture of epichlorohydrin. The experimental equilibrium data of ternary systems were used to regress the interaction parameters for the nonrandom two-liquid (NRTL) model and UNIQUAC model.