Cadmium tellurite

Cadmium tellurite

Identifiers
CAS Number	15851-44-2^Y
3D model (JSmol)	Interactive image
ChemSpider	146511
ECHA InfoCard	100.036.316
EC Number	239-963-9
PubChem CID	167475
CompTox Dashboard (EPA)	DTXSID50935934
InChI InChI=1S/Cd.H2O3Te/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2 Key: GKMPTXZNGKKTDU-UHFFFAOYSA-L
SMILES [Cd+2].[O-] [Te](=O)[O-]
Properties
Chemical formula	CdO3Te
Molar mass	288.01 g·mol^−1
Appearance	colourless solid[1]
Melting point	695 °C[1]
Boiling point	1050 °C (decomposes)[1]
Solubility in water	insoluble[2]
Hazards
GHS labelling:[3]
Pictograms
Signal word	Warning
Hazard statements	H302, H312, H332
Precautionary statements	P261, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, P501
Related compounds
Other anions	Cadmium telluride Cadmium tellurate Cadmium sulfite Cadmium selenite
Other cations	Calcium tellurite Strontium tellurite Barium tellurite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cadmium tellurite is the tellurite salt of cadmium, with the chemical formula CdTeO₃.

Preparation

Cadmium tellurite can be prepared by the reaction of cadmium sulfate and sodium tellurite in ammonia.

Properties

Cadmium tellurite is a colourless solid^[1] that is insoluble in water.^[2] It is a semiconductor. It is part of the monoclinic crystal system, with space group P2₁/c (No. 14). It can also crystallize in the cubic crystal system and hexagonal crystal system at temperatures above 540 °C.^[4][5]

References

1. William M. Haynes (2016). CRC Handbook of Chemistry and Physics. CRC Press. p. 53. ISBN 978-1-4987-5429-3.
2. Cadmium tellurite, 99% at AlfaAesar, accessed on {{{Datum}}} (PDF) (JavaScript required).^{[dead link‍]}
3. "Cadmium tellurite". pubchem.ncbi.nlm.nih.gov.
4. Krämer, V.; Brandt, G. (1985-08-15). "Structure of cadmium tellurate(IV), CdTeO3". Acta Crystallographica Section C Crystal Structure Communications. 41 (8): 1152–1154. doi:10.1107/S0108270185006941.
5. Poupon, Morgane; Barrier, Nicolas; Petit, Sébastien; Boudin, Sophie (2017). "A new β-CdTeO 3 polymorph with a structure related to α-CdTeO 3". Dalton Transactions. 46 (6): 1927–1935. doi:10.1039/C6DT04449B. ISSN 1477-9226. PMID 28112302.