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

EC Number |

* 236-636-2

PubChem CID

* 11665397

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 pictograms |
GHS Signal word | Warning

GHS hazard statements

| H335

GHS precautionary statements

| P261, P271, P304+340, P312, P403+233, 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

Tracking categories (test):

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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

1. ↑ PubChem. "Sulfurous acid, lithium salt (1:2)" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/11665397.
2. ↑ Holba, V.; Mardiaková, J. (1975). "The effect of electrolytes on kinetics of oxidation of sulfite ion by ferricyanide". Chemical Papers 29 (3): 273–278. https://chempap.org/file_access.php?file=293a273.pdf.
3. ↑ Fujita, Yushi; Motohashi, Kota; Ding, Jiong; Tsukasaki, Hirofumi; Mori, Shigeo; Sakuda, Atsushi; Hayashi, Akitoshi (2024-07-08). "Lithium Sulfite Enhances Cycle Performance of All-Solid-State Batteries with Li 2 S-Based Positive Electrode Materials" (in en). ACS Applied Energy Materials 7 (13): 5447–5456. doi:10.1021/acsaem.4c00770. ISSN 2574-0962. https://pubs.acs.org/doi/10.1021/acsaem.4c00770.
4. ↑ Yang, Shunjin; Hu, Xiaohu; Xu, Shijie; Han, Aiguo; Zhang, Xin; Zhang, Na; Chen, Xing; Tian, RongZheng et al. (2023-08-30). "Synthesis of Deliquescent Lithium Sulfide in Air". ACS Applied Materials & Interfaces 15 (34): 40633–40647. doi:10.1021/acsami.3c08506. https://pubs.acs.org/doi/10.1021/acsami.3c08506. Retrieved 2026-04-15.

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Lithium compounds

Inorganic|

* LiAlCl4
* LiAlH4
* LiAlO2
* LiBF4
* LiBH4
* LiBO2
* LiB3O5
* Li2B4O7
* LiBr
* Li2CO3
* Li2C2
* LiCl
* LiClO
* LiClO3
* LiClO4
* LiCoO2
* LiF
* LiH
* LiI
* LiIO3
* Li2IrO3
* Li2MoO4
* LiNH2
* Li2NH
* LiN3
* Li3N
* LiNO2
* LiNO3
* LiNbO3
* LiOH
* LiO2
* Li2O
* Li2O2
* LiPF6
* Li2PtO3
* Li2Po
* Li2RuO3
* Li2S
* Li2SO3
* Li2SO4
* Li3H(CO3)2
* Li2SiO3
* LiTaO3
* Li2TiO3

Organic|

* 12-hydroxystearate
* acetate
* aspartate
* citrate
* diisopropylamide
* orotate
* succinate
* stearate
* organolithiums

Minerals|

* Amblygonite
* Elbaite
* Eucryptite
* Jadarite
* Lepidolite
* Lithiophilite
* Petalite
* Pezzottaite
* Saliotite
* Spodumene
* Sugilite
* Tourmaline
* Zabuyelite
* Zinnwaldite

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*[CID]: Compound ID
*[H335]: May cause respiratory irritation
*[P261]: Avoid breathing dust/fume/gas/mist/vapours/spray
*[P271]: Use only outdoors or in a well-ventilated area
*[P304+340]: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
*[P312]: Call a POISON CENTER or doctor/physician if you feel unwell
*[P403+233]: Store in a well ventilated place. Keep container tightly closed
*[P405]: Store locked up
*[P501]: Dispose of contents/container to …
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