Dielectric and Thermal Studies on New Phase Transitions of CsHSO4

The dielectric constants and the specific heat of CsHSO 4 are measured from -190°C to 170°C. It is found that CsHSO 4 undergoes phase transitions at about 100°C and 140°C. The transition entropy is 0.35 J ·mol -1 ·deg -1 for the 100°C transition and 11.0 J ·mol -1 ·mol -1 for the 140°C transition.