Tellurium dioxide
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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]
Quick Facts Names, Identifiers ...
α-TeO2, paratellurite | |
Names | |
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Other names
Tellurium(IV) oxide | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.028.357 |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
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) |
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 |
Tellurium trioxide Tellurium monoxide | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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