Heat capacity and thermodynamic properties of germanium disulfide at temperatures from T = (2 to 1240) K

The heat capacity of polycrystalline germanium disulfide α-GeS2 has been measured by relaxation calorimetry, adiabatic calorimetry, DSC and heat flux calorimetry from T = (2 to 1240) K. Values of the molar heat capacity, standard molar entropy and standard molar enthalpy are 66.191 J · K-1 · mol-1, 87.935 J · K-1 · mol-1 and 12.642 kJ · mol-1. The temperature of fusion and its enthalpy change are 1116 K and 23 kJ · mol-1, respectively. The thermodynamic functions of α-GeS2 were calculated over the range (0 ≤ T/K ≤ 1250).