Temperature dependence of the volumetric properties of binary and ternary mixtures of water (1) plus methanol (2) plus ethanol (3) at ambient pressure (81.5 kPa)

Densities, rho, have been measured for three binary mixtures and a ternary mixture formed by water (1), methanol (2), and ethanol (3) over the entire range of compositions at temperatures from (283.15 to 313.15) K in 5 K intervals and at ambient pressure (81.5 kPa). The excess molar volumes, V-m(E), partial excess molar volumes, V-i(E), and their values at infinite dilution, V-i(E,0), for binary and ternary liquid mixtures and thermal expansion coefficients, (x, of the pure component were calculated. The excess molar volumes were correlated with the Redlich-Kister equation (for binary data) and the Cibulka equation (for ternary data). The excess molar volumes, V-m(E), were compared with values from the literature in the region of overlap.