Lithium sulfite

Names
IUPAC name Lithium sulfite
Systematic IUPAC name Lithium sulfite; Dilithium sulfite
Other names Lithium Sulphite
Identifiers
CAS Number	13453-87-7
3D model (JSmol)	Interactive image
ChemSpider	9840129
ECHA InfoCard	100.033.292
EC Number	236-636-2
PubChem CID	11665397
CompTox Dashboard (EPA)	DTXSID2094001
InChI InChI=1S/Li.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-1
SMILES [Li+].[O-]S(O)=O
Properties
Chemical formula	Li2SO3
Molar mass	93.943 g/mol
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H335
Precautionary statements	P261, P271, P304+P340, P312, P403+P233, P405, P501
Related compounds
Other anions	lithium sulfate
Other cations	sodium sulfite
Related compounds	Lithium hydrogen sulfite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lithium sulfite, or lithium sulphite, is an inorganic compound with the chemical formula Li₂SO₃.

Preparation

Lithium sulfite can be prepared by treating lithium carbonate solution with sulfur dioxide.^[2] The anhydrous form can be prepared by heating the hydrate under vacuum.^[3]

It also occurs as a byproduct in the preparation of lithium sulfide from lithium hydroxide and sulfur.^[4]

References

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