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

Abstract The heat capacity of polycrystalline germanium disulfide α-GeS 2 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-GeS 2 were calculated over the range (0 ⩽  T /K ⩽ 1250).