Thallium(III) oxide

From Wikipedia, the free encyclopedia

This article or section is in need of attention from an expert on the subject. WikiProject Chemistry or the Chemistry Portal may be able to help recruit one. If a more appropriate WikiProject or portal exists, please adjust this template accordingly.(January 2007)

This chemistry related article lacks information on the notability (importance) of the subject matter. Please help improve this article by providing context for a general audience, especially in the lead section. This article has been tagged since June 2006. (help, talk)

Thallium(III) oxide
Image:Thallium(III) oxide.jpg
Other names	thallium trioxide
Identifiers
CAS number	[1314-32-5]
Properties
Molecular formula	Tl2O3
Molar mass	456.7648 g/mol
Appearance	brown-black odorless powder
Density	9.52 g/cm³, solid (16°C)
Melting point	717°C
Boiling point	1080°C
Solubility in water	insoluble
Hazards
EU classification	not listed
NFPA 704	3
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Thallium(III) oxide is a chemical compound of thallium and oxygen. It occurs in nature as the mineral avicennite. Its structure is related to that of Mn₂O₃ which has a bixbyite like structure. Tl₂O₃ is metallic with high conductivity and is a degenerate n-type semiconductor which may have potential use in solar cells.^[1] A method of producing Tl₂O₃ by MOCVD is known.^[2] Any practical use of thallium(III) oxide will always have to take account of thalliums poisonous nature. Conditions/substances to avoid are: moisture and acids.

[edit] References