Enthalpy of solution for thiourea in triglycol and water

Thermodynamic properties such as enthalpy of solution for thiourea in trigiycol and water were determined. Measurements were made at 293.15 K and molalities of solute for different solvents in the range of m = 0.106 to 0.213 mol kg−1, making use of a precise isoperibol ampoule-type calorimeter. It was concluded that the solvent proton-donor ability and existing steric hindrances for hydrogen bonding and other intermolecular interactions play a key role in the solvation of thiourea.