Measurement and correlation of solubility of methyleneaminoacetonitrile in pure and binary solvents and thermodynamic properties of solution

The solubility of methyleneaminoacetonitrile in methanol, ethanol, n-propanol, n-butanol, water and binary solvents (n-propanol + methanol, water + methanol) was measured by a laser dynamic method under atmospheric pressure at temperature ranging from 278.15 K to 323.15 K. The solubility order of methyleneaminoacetonitrile in pure solvents was methanol > ethanol > n-propanol > water > n-butanol. For binary solvents, the solubility of methyleneaminoacetonitrile increased with increasing the content of methanol. In addition, Hansen solubility parameters (HSP) was also used to explain and predict the solubility behavior. In pure solvents, the experimental solubility data were correlated by modified Apelblat equation, λh equation, NRTL model, and Wilson model; and in binary solvents the experimental solubility data were correlated by the modified Apelblat equation, λh equation, Jouyban-Acree model, and Sun model. The values of RD, RAD, and RMSD indicated that these models fit the solubility data well in pure and binary solvents. The thermodynamic properties (ΔsolH°, ΔsolS°, ΔsolG°, %ξH, %ξTS) of the solution were calculated from the van’t Hoff equation, and the dissolution process was endothermic, and the force for the dissolution process was entropy-driven in pure and binary solvents.