DYNAMIC VISCOSITY AND EXCESS VOLUME OF THE TERNARY HEPTANE PLUS METHYLCYCLOHEXANE PLUS 1-METHYLCYCLOHEXANE VERSUS COMPOSITION AND TEMPERATURE

The density rho and the dynamic viscosity eta of the ternary mixture h eptane + methylcyclohexane + 1-methylnaphtalene were measured at 303.1 5, 323.15 and 343.15 K at atmospheric pressure for molar fractions x(i ) = 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875 and 1 (with Sigma(i =1)(3) x(i) = 1). The experimental data for eta and rho (135 values) c an be used to evaluate the excess volume V-E and the excess energy of activation for viscous flow Delta G(E). The density is modelled over t he entire experimental domain of composition and temperature with an a bsolute average deviation of 0.03% and the dynamic viscosity with an a bsolute average deviation of 0.7%.