Studies on the vapor-liquid equilibrium of a ternary system of water-methyl methacrylate-methacrylic acid

Experimental results of the vapor-liquid equilibrium and the liquid-liquid-vapor equilibrium (abbreviated as VLE and LLVE) of H_2O-methyl methacrylate (MMA) and H_2O methacrylic acid (MAA) binary and H_2O-MMA-MAA ternary systems at 26. 66 kPa are presented. After correction for the vapor association of MAA, the binary data are correlated by UNIQUAC equation. Values of ternary VLE and LLVE predicted from the equation with corresponding binary parameters are in good agreement with experimental values.