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EC number: 231-900-3
CAS number: 7778-18-9
Table 1: Predicted and experimental values of pK1for
anhydrite between 298 and 623 K
a = correspondence principle
b = constant charge principle
c = not stated
The pK1 value for calcium sulfate anhydrite is 4.35 at 298.15 K (25 °C).
Section 7.16 Corti (1983): Comparing experimentally derived and
calculated values, the authors concluded the pK1 value for calcium
sulfate anhydrite to be 4.35 at 298.15 K (25 °C).
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