Temperature Dependence of the Volumetric Properties of Binary and Ternary Mixtures of Water (1) + Methanol (2) + Ethanol (3) at Ambient Pressure (81.5 kPa)

Abstract

Densities, ρ, 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, , partial excess molar volumes, , and their values at infinite dilution, , for binary and ternary liquid mixtures and thermal expansion coefficients, α, 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, , were compared with values from the literature in the region of overlap.