Changes in refractive indices of ternary mixtures containing benzene, cyclohexane, 1-pentanol, and anisole at T=298.15 K

Refractive indices for the ternary mixtures (benzene+1-pentanol+anisole), ( cyclohexane+1-pentanol+anisole), and (benzene+cyclohexane+anisole) at T = 2 98.15 K and atmospheric pressure over the whole mole fraction range are rep orted. The corresponding derived property was calculated from the experimen tal data, and fitted to the Cibulka equation, such parameters being gathere d. The application of the Heller equation in order to predict the excess mo lar volumes from experimental refractive index on mixing was studied with d ifferent mixing rules, a qualitative accuracy being obtained for the mixtur es containing I-pentanol due to the nonlinear character of its refractive i ndex on mixing. (C) 2001 Academic Press.