Based on the parameterisation in Cheng (2008) *Ind. Eng. Chem. Res.* **47** 3285-3288.

Modified on 28 June 2016. Density calculation has been changed: equation 25 in Cheng's paper to compute the density of the mixture should use the glycerine fraction by VOLUME and not by mass. Thanks to Paul Debue for pointing this out.