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Abstract
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Densities, , and viscosities, , of pure isobutanol, 1-amino-2-propanol, and 1-propanol, along with their binary mixtures of {x1 isobutanol + x2 1-propanol}, {x1 1-amino-2-propanol + x2 1-propanol}, and {x1 1-amino-2-propanol + x2 isobutanol} were measured over entire composition range and at temperatures (293.15 to 333.15) K at ambient pressure (81.5 kPa). The excess molar properties such as the excess molar volume, , partial molar volumes, and , excess partial molar volumes, and , thermal expansion coefficient, , excess thermal expansion coefficient, , viscosity deviation, , and the excess Gibbs free energy of activation, ∆GE*, for the binary mixtures were calculated from the experimental values of densities and viscosities. The values of the binary mixtures are negative in the entire composition range and at all temperatures, and increase with increasing temperature. Viscosity deviations, , are negative over the entire composition range and decrease with increasing temperature. The viscosities of the mixtures were correlated by models of McAllister, Heric, Hind, Katti, and Nissan. The obtained data were correlated by Redlich- Kister equation and the fitting parameters and standard deviations were determined.
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