Journal of Thermal Analysis and Calorimetry

, Volume 66, Issue 2, pp 509-512

First online:

Solubilities of Magnesium Sulfite

  • J. NývltAffiliated withInstitute of Inorganic Chemistry, Academy of Sciences of the Czech Republic

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Literature data of solubility of MgSO3 in water and in aqueous solutions of MgSO4 have been correlated. Magnesium sulfite forms hexahydrate (stable below 40°C) and trihydrate (above 40°C), nevertheless, metastable hexahydrate can precipitate at temperatures significantly higher than this transition temperature. Magnesium sulfate increases the solubility of the sulfite.

magnesium sulfate magnesium sulfite metastable solid solubility