Tellurium dioxide

Tellurium dioxide
	; α-TeO2, paratellurite
Names
	Other names Tellurium(IV) oxide
Identifiers
CAS Number	7446-07-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	56390 ;
ECHA InfoCard	100.028.357
PubChem CID	62638;
UNII	397E9RKE83 ;
CompTox Dashboard (EPA)	DTXSID8052487 ;
	InChI InChI=1S/O2Te/c1-3-2 Key: LAJZODKXOMJMPK-UHFFFAOYSA-N ; InChI=1/O2Te/c1-3-2 Key: LAJZODKXOMJMPK-UHFFFAOYAO;
	SMILES O=[Te]=O;
Properties
Chemical formula	TeO2
Molar mass	159.60 g/mol
Appearance	white solid
Density	5.670 g/cm3(orthorhombic) ; 6.04 g/cm3 (tetragonal)
Melting point	732 °C (1,350 °F; 1,005 K)
Boiling point	1,245 °C (2,273 °F; 1,518 K)
Solubility in water	negligible
Solubility	soluble in acid and alkali
Refractive index (nD)	2.24
Hazards
Flash point	Non-flammable
Related compounds
Other cations	Sulfur dioxide; Selenium dioxide
Related tellurium oxides	Tellurium trioxide; Tellurium monoxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tellurium dioxide (TeO₂) is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, β-TeO₂, and the synthetic, colourless tetragonal (paratellurite), α-TeO₂.^[2] Most of the information regarding reaction chemistry has been obtained in studies involving paratellurite, α-TeO₂.^[3]

^ Pradyot Patnaik (2002). Handbook of Inorganic Chemicals. McGraw-Hill. ISBN 0-07-049439-8.
^ Greenwood NN, Earnshaw A (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 911. ISBN 978-0-08-022057-4.
^ W.R.McWhinnie (1995) Tellurium - Inorganic chemistry Encyclopedia of Inorganic Chemistry Ed. R. Bruce King (1994) John Wiley & Sons ISBN 978-0-471-93620-6

[1] Pradyot Patnaik (2002). Handbook of Inorganic Chemicals. McGraw-Hill. ISBN 0-07-049439-8.

[Greenwood-2] Greenwood NN, Earnshaw A (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 911. ISBN 978-0-08-022057-4.

[McWhinnie-3] W.R.McWhinnie (1995) Tellurium - Inorganic chemistry Encyclopedia of Inorganic Chemistry Ed. R. Bruce King (1994) John Wiley & Sons ISBN 978-0-471-93620-6

[1]

[2]

[3]

Names

α-TeO₂, paratellurite
Other names Tellurium(IV) oxide
Identifiers
CAS Number	7446-07-3^Y
3D model (JSmol)	Interactive image
ChemSpider	56390^Y
ECHA InfoCard	100.028.357
PubChem CID	62638
UNII	397E9RKE83^Y
CompTox Dashboard (EPA)	DTXSID8052487
InChI InChI=1S/O2Te/c1-3-2^Y Key: LAJZODKXOMJMPK-UHFFFAOYSA-N^Y InChI=1/O2Te/c1-3-2 Key: LAJZODKXOMJMPK-UHFFFAOYAO
SMILES O=[Te]=O
Properties
Chemical formula	TeO₂
Molar mass	159.60 g/mol
Appearance	white solid
Density	5.670 g/cm³(orthorhombic) 6.04 g/cm³ (tetragonal) ^[1]
Melting point	732 °C (1,350 °F; 1,005 K)
Boiling point	1,245 °C (2,273 °F; 1,518 K)
Solubility in water	negligible
Solubility	soluble in acid and alkali
Refractive index (n_D)	2.24
Hazards
Flash point	Non-flammable
Related compounds
Other cations	Sulfur dioxide Selenium dioxide
Related tellurium oxides	Tellurium trioxide Tellurium monoxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references