Magnesium sulfite

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Magnesium sulfite
Mg2+.svg
Sulfit-Ion3.svg
Names
IUPAC name
Magnesium sulfite
Other names
Magnesium sulphite
Identifiers
7757-88-2
ChemSpider 2282946
EC number 231-825-6
PubChem 3014583
Properties
MgSO
3
(anhydrous); MgSO
3
·6H
2
O
Molar mass 104.368200 g/mol (anhydrous)
212.4599 g/mol (heptahydrate)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Magnesium sulfite is the magnesium salt of sulfurous acid with the formula MgSO
3
. Its most common hydrated form has 6 water molecules making it a hexahydrate, MgSO
3
·6H
2
O
. When heated above 40 °C (104 °F), it is dehydrated to magnesium sulfite trihydrate, or MgSO
3
·3H
2
O
.[1] The anhydrous form is hygroscopic, meaning that it readily absorbs water from the air.

References[edit]

  1. ^ Nývlt, J., "Solubilities of Magnesium Sulfite," Journal of Thermal Analysis and Calorimetry, Volume 66, Number 2 / November, 2001

See also[edit]