| Abstract
| - Excess enthalpies, densities, and speeds of sound are reported for the binary mixtures β-pinene + 2-methyl-1-propanol at the temperatures (283.15, 298.15, 303.15, 313.15, and 323.15) K and β-pinene + 2-methyl-2-propanolat the temperatures (303.15, 313.15, and 323.15) K. Excess molar volumes have been calculated from the densitiesand speed of sound deviations, isentropic compressibilities, and excess isentropic compressibilities from speedsof sound. The excess properties and deviations of properties have been fitted to Padé approximants. Excess molarenthalpies and excess molar volumes are positive for both mixtures, whereas speed of sound deviations showboth positive and negative values. Also, positive and negative values of excess isentropic compressibility areobserved for the mixture β-pinene + 2-methy-1-propanol, but the mixture β-pinene + 2-methyl-2-propanol exhibitspositive values only. The excess properties are compared with those of the mixtures of β-pinene with 1-butanoland 2-butanol.
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