VISCOSITY AND DENSITY OF LIQUID-MIXTURES OF N-ALKANES WITH SQUALANE

Viscosity and density measurements are reported for binary liquid mixtures of n-butane and n-hexane with squalane in the temperature range from 273 to 333 K. The viscosity measurements have been carried out by using a capillary viscometer calibrated with standard liquids, that is, JS5, JS10, JS20, and water. The uncertainty in the viscosity data was estimated to be +/-1.7%. The density needed for the calculation of the viscosity has been measured by using a glass pycnometer within an accuracy of +/-0.04%. In the prediction of the viscosity, the scheme of Assael et al, fails for mixtures of this type differing greatly in size.