This work presents densities and viscosities at atmospheric conditions for methyl tert-butyl ether (MTBE) + nonane, or decane, over the whole range of compositions from (273.15 to 363.15) K. A vibrating tube densimeter has been used for the density measurements and a Cannon-Fenske viscosimeter for the viscosity measurements. Excess molar volumes have been calculated from the density measurements and have been represented with a Redlich-Kister equation. The average absolute deviation of our excess molar volumes from literature values is within 0.015 cm(3) . mol(-1). We also have represented our kinematic viscosity values with a three-body McAllister equation.