Comment on 'Influence of temperature and pressure on the density and speed of sound of 2-hydroxyethylammonium propionate ionic liquid as well as N-ethyl-2-hydroxyethylammonium propionate ionic liquid'

摘要

The correctness and usability of the properties calculated by Sarabando et al. [J. Chem. Thermodyn. 122 (2018) 183-193] and [J. Chem. Thermodyn. 131 (2019) 303-313] are critically discussed. Errors are found in the authors' published values derived from an equation of state. The comparison with the data based on thermodynamic relationships shows that their results are misleading. (C) 2019 Elsevier Ltd.