Cadmium sulfite

Cadmium sulfite
Names
	Preferred IUPAC name Cadmium(2+) sulfite
	Other names Cadmium sulphite
Identifiers
CAS Number	13477-23-1;
3D model (JSmol)	Interactive image;
ChemSpider	11469971;
ECHA InfoCard	100.033.410
EC Number	236-767-5;
PubChem CID	22571170;
CompTox Dashboard (EPA)	DTXSID40158938 ;
	InChI InChI=1S/Cd.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2 Key: BYJADUSHMADYRW-UHFFFAOYSA-L;
	SMILES [O-]S(=O)[O-].[Cd+2];
Properties
Chemical formula	CdO3S
Molar mass	192.47 g·mol−1
Melting point	decomposes
Solubility in water	0.00221 mol/kg (0 °C); 0.00207 mol/kg (90 °C)
Related compounds
Related compounds	Cadmium sulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cadmium sulfite is an inorganic compound with the formula CdO₃S.^[2] It is the cadmium salt of sulfurous acid. Several hydrates of cadmium sulfite are known, with the dihydrate (CdO₃S·2H₂O) being notable. Cadmium sulfite crystallizes from aqueous solutions.^[3]

As with most other cadmium compounds, it is toxic to the liver and reproductive system.^[2]

Cadmium sulfite has been used to prepare nanoparticles of cadmium oxide by the calcination of a cadmium sulfite emulsion.^[4]

References

^ ^a ^b Perry, Dale L. (April 19, 2016). Handbook of Inorganic Compounds. CRC Press. p. 83. ISBN 978-1-4398-1462-8.
^ ^a ^b "Cadmium sulphite". PubChem. National Center for Biotechnology Information. Retrieved January 5, 2026.
^ Lutz, H.D. (October 1983). "Cadmium sulfite" (PDF). IUPAC-NIST Solubility Database, Version 1.1. doi:10.18434/T4QC79.
^ Mohammadikish, Maryam; Hajisadeghi, Haneih (2016). "Synthesis and growth mechanism of CdO nanoparticles prepared from thermal decomposition of CdSO₃ nanorods". Journal of Materials Science: Materials in Electronics. 27 (6): 6480–6487. doi:10.1007/s10854-016-4589-z. ISSN 0957-4522.

[handbook-1] Perry, Dale L. (April 19, 2016). Handbook of Inorganic Compounds. CRC Press. p. 83. ISBN 978-1-4398-1462-8.

[pc-2] "Cadmium sulphite". PubChem. National Center for Biotechnology Information. Retrieved January 5, 2026.

[nist-3] Lutz, H.D. (October 1983). "Cadmium sulfite" (PDF). IUPAC-NIST Solubility Database, Version 1.1. doi:10.18434/T4QC79.

[4] Mohammadikish, Maryam; Hajisadeghi, Haneih (2016). "Synthesis and growth mechanism of CdO nanoparticles prepared from thermal decomposition of CdSO₃ nanorods". Journal of Materials Science: Materials in Electronics. 27 (6): 6480–6487. doi:10.1007/s10854-016-4589-z. ISSN 0957-4522.

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