Notizen: Pressure Dependence of the Melting of RbHS04

The temperature and enthalpy of melting have been studied in the range up to 0.55 GPa by means of differential scanning calorimetry. In the range below a triple point at (498 ± 5) K and (0.27 ±0.02) GPa the results can be expressed by means of linear relations: 7 = 476 + 80 p, and AH = 22.4- 29.8 p, where the corresponding units are K, kJ/mol and GPa. Above the triple point the correlation between pressure and temperature corresponds to Simon's equation, p = 0.27 +1.57 x 10 (T-498) , and the enthalpy of melting decreases linearly with the pressure: ΔH = 9.50-10.65 (p-0.28). Comparison is made with a recent study by Sinitsyn et al