The solubility of strontium carbonate in water

Abstract

Values have been determined for the solubility of SrCO₃ in water, by use of both radiometric and flame emission spectrophotometric methods. The two methods gave essentially identical results. For water free from atmospheric CO₂ the solubilities/mg I^–1 were 5·34 ± 0·014 at 5 °C, 6·94 ± 0·018 at 15 °C, and 8·95 ± 0·029 at 25 °C. For water in equilibrium with the atmosphere at 25 °C the solubility was 42·7 ± 0·048 mg l^–1. These results agree satisfactorily with calculated values based on a dissociation constant for SrCO₃ of 10^–9·15 at 25 °C, which can be derived from data on standard free energies of formation.