| |||
| Names | |||
|---|---|---|---|
| IUPAC name Magnesium sulfite | |||
| Other names Magnesium sulphite | |||
| Identifiers | |||
| ChemSpider | |||
| ECHA InfoCard | 100.028.932 | ||
| EC Number |
| ||
| UNII | |||
| 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 theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
Magnesium sulfite is themagnesiumsalt ofsulfurous acid with the formulaMgSO
3. Its most common hydrated form has 6 water molecules making it ahexahydrate,MgSO
3·6H
2O. When heated above 40 °C (104 °F), it is dehydrated to magnesium sulfitetrihydrate, orMgSO
3·3H
2O.[1] The anhydrous form ishygroscopic, meaning that it readily absorbs water from the air.
Solubility tables of MgSO3 hydrates PDF:[2]
