Densities (rho) and viscosities (eta) for the ternary system cyclopropanemethanol (1) + n-dodecane (2) + butylcyclohexane (3) and three corresponding binary systems have been measured at 11 temperatures from 293.15 to 343.15 K under atmospheric pressure. The excess molar volumes (V-m(E)) and viscosity deviations (Delta eta) of binary systems have been calculated and fitted to the Redlich-Kister equation, while data of the ternary system have been fitted to the Clibuka, Singh, Nagata-Tamura, and Redlich-Kister equations, respectively. The value of the V-m(E) of the investigated systems is positive, while the value of Delta eta is negative over the entire concentration range; the results are illustrated through molecular interactions and structural effects.