Magnesium sulfite

Magnesium sulfite
Names
IUPAC name
Magnesium sulfite
Other names
Magnesium sulphite
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.028.932
EC Number
  • 231-825-6
UNII
  • InChI=1S/Mg.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2
    Key: JESHZQPNPCJVNG-UHFFFAOYSA-L
  • trihydrate: InChI=1S/Mg.H2O3S.3H2O/c;1-4(2)3;;;/h;(H2,1,2,3);3*1H2/q+2;;;;/p-2
    Key: AGRLKNFKXGZQRX-UHFFFAOYSA-L
  • hexahydrate: InChI=1S/Mg.H2O3S.6H2O/c;1-4(2)3;;;;;;/h;(H2,1,2,3);6*1H2/q+2;;;;;;;/p-2
    Key: KLIKMSKEFPRHEE-UHFFFAOYSA-L
  • [O-]S(=O)[O-].[Mg+2]
  • trihydrate: O.O.O.[O-]S(=O)[O-].[Mg+2]
  • hexahydrate: O.O.O.O.O.O.[O-]S(=O)[O-].[Mg+2]
Properties
MgSO
3 (anhydrous); MgSO
3·6H
2O
Molar mass 104.368200 g/mol (anhydrous)
212.4599 g/mol (hexahydrate)
5.2g/L at 298.2K (hexahydrate)
Except where otherwise noted, data are 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
2O. When heated above 40 °C (104 °F), it is dehydrated to magnesium sulfite trihydrate, or MgSO
3·3H
2O.[1] The anhydrous form is hygroscopic, meaning that it readily absorbs water from the air.

See also

Solubility tables of MgSO3

References

  1. ^ Nývlt, J., "Solubilities of Magnesium Sulfite," Journal of Thermal Analysis and Calorimetry, Volume 66, Number 2 / November, 2001
This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.