Commentary concerning the "Measurement, correlation of the solubility and solution thermodynamics of 2-cyanoguanidine in (methanol plus water) binary solvent systems from T = (283.15 to 343.15) K"

作者：Ma Jiaojiao; Liang Jinhua; Zhao Hongkun^*

来源：Journal of Chemical Thermodynamics, 2019, 129: 1-2.

DOI：10.1016/j.jct.2018.08.039

• 2-Cyanoguanidine
• Solubility
• lambda h Equation

Errors are discovered regarding the published equation coefficients of Zhang and co-workers [J. Chem. Thermodynamics 89 (2015) 233-239] for mathematically describing the solubility behavior of 2-cyanoguanidine in neat solvents using the lambda h equation. The back-calculated values using the published equation coefficients are not the mole fraction solubility as stated in the published paper. Furthermore, the lambda and h parameters were re-analysed according to the experimental solubility data.