Viscometric, volumetric and acoustic properties of binary mixtures of a nuclear extractant with monocarboxylic acids (C1-C3) at 303.15 K

Dash, Sarat Kumar; Singh, Saroj Kumar; Dalai, Biswajit


Experimental values of density (ρ), viscosity (η) and ultrasonic velocity (u) of the binary liquid mixtures of a nuclear extractant-di (2-ethyl hexyl) phosphoric acid (D2EHPA) and monocarboxylic acids viz. acetic acid, propionic acid and n-butyric acid over entire composition range of D2EHPA at 303.15 K are reported. Experimental data are used to assess the excess molar volume and deviation in isentropic compressibility, ultrasonic velocity and viscosity. These properties are used to interpret molecular interactions among component liquids. The values of excess/deviation functions have been fitted to a Redlich-Kister type polynomial equation to derive binary coefficients and estimate standard error. Furthermore, mixture viscosities are correlated with some single parameter viscosity models and relative merits of these models are discussed.


Viscosity; Density;Ultrasonic velocity; Binary mixtures; Dipole-dipole interaction

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