In a recent report, it was shown that the diffusion coefficient of solutes at infinite dilution could be estimated using the relationship of the solute at infinite dilution and the self-diffusion coefficient of the solvent, respectively; Vz" and V1O are the volumes at the critical temperature for the solute and solvent, respectively; G O is the partial molar volume of the solute in solution; and u1 is the molar volume of the solvent. Equation (1) was shown to be applicable to a diverse series of thirteen solvents and 126 solutes.Furthermore, in a previous report, Fedors (1978) ical Engineers, 1979. showed that the self-diffusion coefficient Dll itself could