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Densities, speeds of ultrasound, ultrasonic absorption coefficients (in the frequency range 10–80 MHz) and kinematic viscosities have been measured for 1-butanol + 1,3-butanediol mixtures at the temperature 298.15 K. Using these results, the molar volumes, isentropic compressibility coefficients, molar isentropic compressibilities, volume viscosities, and the corresponding excess and deviation values (excess molar volumes, excess isentropic compressibility coefficients, excess molar isentropic compressibilities, two different defined deviations speed of ultrasound, and dynamic viscosity deviations) were calculated. The excess and deviation values are expressed by Redlich-Kister polynomials and discussed in terms of the variations of the structure of the system caused by the participation of the two different alcohol molecules in the dynamic intermolecular association process through hydrogen bonding. The predictive abilities of Grunberg-Nissan and McAllister equations for viscosities of mixtures are also examined.

Densities, Speeds of Ultrasound, Ultrasonic Absorption and Viscosities of 1-Butanol + 1,3-Butanediol System at 298.15 K