Physical Properties of Binary Mixtures of Ethyl Formate with Benzene, Isopropyl Benzene, Isobutyl Benzene, and Butylbenzene at (303.15, 308.15, and 313.15) K

Densities, viscosities, and speeds of sound of binary mixtures of ethyl formate with benzene, isopropyl benzene, isobutyl benzene, and butylbenzene have been measured over the entire range of composition, at (303.15, 308.15, and 313 15) K and at atmospheric pressure. The excess volume. V-E, deviation in viscosity, Delta eta, and deviation in isentropic compressibility, Delta K-s, have been calculated from the experimental values of density, viscosity, and ultrasonic velocity The excess volumes are positive, while the deviations in viscosities are negative for all of the studied binary systems over the whole composition range. The deviation in isentropic compressibility shows both positive and negative deviations for ethyl formate with benzene and isopropyl benzene, and for the remaining systems they are positive The ability of some of the empirical models to calculate mixing viscosities was also tested.