Densities and viscosities of the ternary mixture ethanol + 2-butanone + 2,2,4-trimethylpentane and the binary mixtures ethanol + 2-butanone, ethanol + 2,2,4-trimethylpentane, and 2-butanone + 2,2,4-trimethylpentane were measured at T = (298.15, 308.15, and 318.15,) K and atmospheric pressure over the whole composition range. Densities were determined using a vibrating-tube densimeter. Viscosities were measured with an automatic Ubbelohde capillary viscometer. Excess molar volumes V-E and deviations in viscosity Ail for the mixtures were derived from experimental data. The binary data were correlated with liquid composition by using the Redlich-Kister equation. For the ternary data, several polynomial equations have been tested to minimize the set of parameters for adequate correlation.