(1) | \ln {\mu}_{12} = x_1 \cdot \ln {\mu}_1 + x_2 \cdot \ln {\mu}_2 + \epsilon \, x_1 \, _2 |
See also
Physics / Fluid Dynamics / Fluid Mixing Rules / Mixing Rules for Viscosity
Reference
L. Grunberg, A.H. Nissan, The energies o vaporization, viscosity and cohesion and the structure o liquids. Trans.Faraday Soc. 45 (1949) 125-137 cc.