According to the synthesis process of Cu(TO)₂Cl₂ (TO = 1, 2, 4-triazole-5-one), a crystal growth kinetics model in mixed solvents was proposed. The thermodynamics parameters were obtained utilizing this kinetic model, as follows: E_a=45.37 kJ·mol^－1, ln［A/s^－1］=14.65, Δ^≠Ｇ_m= 82.11 kJ·mol^－1, Δ≠Ｈm= 42.85 kJ·mol－1, Δ^≠Ｓ_m=-131.58 J·mol^－1·K^－1. Furthermore, the specific heat capacity of Cu(TO)₂Cl₂ at 298.15 K, and the standard enthalpies of formation of ［Cu(TO)₂］²⁺ (aq) and Cu(TO)₂Cl₂ (s) were determined using a microcalorimetry RD496-Ⅲ.