A study some physical properties for ternary system of hexane with some alcohols at different temperatures.


This reasearch concerned with study the densities, ρ, refractive indices, nD, and viscosities, η, over the range of temperatures 298.15, 308.15, 318.15, and 328.15 K for ternary mixtures cyclohexane+1-pentanol+ n-hexane, and cyclohexane+3-hexanol +n-hexane. From experimental data of densities, refractive indices, and viscosities, the excess molar volumes, VE , excess refractive indices, nE , and excess viscosities, ηE , were calculated for ternary mixtures. The excess function results for these mixtures were observed the ternary mixtures in this study are not ideal, show a positive or a negative deviation from ideality depending on molecular interactions in these mixtures. Flory theory was adopted to predict the excess molar volumes VE for the ternary mixtures. The theoretical results of excess molar volumes exert good agreement in sign and magnitude with the experimental excess molar volumes for these mixtures. The mixing rules equation were used to predict theoretical refractive index, we found good agreement between them for ternary mixtures in this study. In this study Heric-coursey equation was used to calculate the excess viscosities for ternary mixtures studied here. The theoretical results of excess viscosity exert good agreement with the experimental results of excess viscosity for these mixtures.