Density and kinematic viscosity have been measured with a vibrating tube densimeter and an Ubbelohde capillary viscometer for binary mixtures of 1,1,1-trichloroethane and six paraffins, hexane, heptane, octane, decane, dodecane, and hexadecane, and five cycloparaffins, cyclohexane, methylcyclohexane, ethylcyclohexane, propylcyclohexane, and butylcyclohexame, at atmospheric pressure and 298.15 K. The dynamic viscosity, excess volume, and viscosity deviation function have been obtained from the density and kinematic viscosity results. The results have been correlated with a polynomial expression for the excess volume and with a recently published model for the mixture viscosity. Parameters for such models are reported.