Journal of Chemical and Engineering Data, Vol.64, No.6, 2292-2302, 2019
Density and Viscosity of 2-Butanol + (1-Propanol, 2-Propanol, or 3-Amino-1-propanol) Mixtures at Temperatures of (293.15 to 323.15) K: Application of the ERAS Model
In this work, the density, rho, and viscosity, eta, of pure components 1-propanol, 2-propanol, 3-amino-1-propanol, and 2-butanol along with binary mixtures of {x(1)2-butanol + x(2)1-propanol}, {x(1)2-butanol + x(2)2-propanol}, and {x(1)2-butanol + x(2)3-amino-1-propanol} were determined over the entire composition range at temperatures of (293.15 to 323.15) K. The experimental data of density and viscosity were used to calculate the excess molar volumes, V-m(E), and viscosity deviations, Delta eta, of the mixtures. The obtained results show that the V-m(E) values of the mixtures are negative over the whole composition range and increase with increasing temperature. Viscosity deviations of the {x(1)2-butanol + x(2)1-propanol} mixture are negative at low temperatures and positive at high temperatures, while the Delta eta values of {x(1)2-butanol + x(2)2-propanol} and {x(1)2-butanol + x(2)3-amino-1-propanol} mixtures are negative over the whole composition range and decrease with increasing temperature. The excess molar quantities were correlated by the Redlich-Kister equation. The ERAS model was used to correlate the excess molar volumes of the mixtures at temperatures of (298.15, 303.15, 313.15) K. Comparison between the calculated and experimental V-m(E) values shows good agreement for all three mixtures.