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The thermophysical behavior of the binary mixtures N,Ndimethylacetamide + methanol and N,N-dimethylacetamide + ethanol has been studied through the measurement of density, ρ, speed of sound, u, refractive index, n D , and kinematic viscosity, ν, over the entire mole fraction range at the temperatures of 283.15, 298.15 and 313.15 K and at p = 99.0 kPa. Excess volumes, V E , excess isentropic compressibilities,κ S E , refractive index deviations, Δn D , and viscosity deviations, Δη, were also calculated and correlated with the Redlich−Kister equation. Both systems present negative excess volumes and excess isentropic compressibilities and positive refractive index deviations in the whole composition range. The viscosity deviations are positive for N,N-dimethylacetamide + methanol and turn to negative for N,N-dimethylacetamide + ethanol. Moreover, both systems behave differently when temperature is raised. The experimental results were interpreted based on strength of specific interactions, size, and shape of molecules.

Several thermophysical properties such as densities, ρ, speeds of sound, u, refractive indices, nD, and kinematic viscosities,, have been measured for the binary mixtures of N,N-Dimethylacetamide with 1-propanol and 1-butanol over the entire range of composition, at the temperatures (283.15, 298.15 and 313.15) K and at atmospheric pressure p = 0.1 MPa. From these experimental data, excess molar volumes, V E , excess isentropic compressibilities, E S  , refractive index deviations, ΔnD, and viscosity deviations, Δη, were calculated. The calculated excess or deviation properties were correlated with the Redlich-Kister equation and the corresponding parameters were presented. The results obtained, were discussed in terms of structural effects and specific molecular interactions, and the influence of the alkanol chain length was also considered.

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