Thallium(III) oxide

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Thallium(III) oxide
Thallium(III) oxide
Names
Other names
thallium trioxide, thallium sesquioxide
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.013.846 Edit this at Wikidata
EC Number
  • 215-229-3
UNII
  • InChI=1S/3O.2Tl/q3*-2;2*+3 checkY
    Key: LPHBARMWKLYWRA-UHFFFAOYSA-N checkY
  • [O-2].[O-2].[O-2].[Tl+3].[Tl+3]
Properties[1]
Tl2O3
Molar mass 456.76 g/mol
Appearance dark brown solid
Density 10.19 g/cm3, solid (22 °C)
Melting point 717 °C (1,323 °F; 990 K)
Boiling point 875 °C (1,607 °F; 1,148 K) (decomposes)
insoluble
+76.0·10−6 cm3/mol
Structure
Cubic, (Bixbyite) cI80[2]
Ia3 (No. 206)
Hazards
GHS labelling:[3]
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H300+H330, H373, H411
P273, P301+P310+P330, P304+P340+P310, P314
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
4
0
0
Lethal dose or concentration (LD, LC):
44 mg/kg (oral, rat)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Thallium(III) oxide, also known as thallic oxide, is a chemical compound of

MOCVD is known.[6] Any practical use of thallium(III) oxide will always have to take account of thallium's poisonous nature. Contact with moisture and acids
may form poisonous thallium compounds.

Production

It is produced by the reaction of thallium with oxygen or hydrogen peroxide in an alkaline thallium(I) solution. Alternatively, it can be created by the oxidation of thallium(I) nitrate by chlorine in an aqueous potassium hydroxide solution.[7]

References

  1. ISBN 0-8493-0462-8
    ..
  2. doi:10.1016/0921-4534(93)90382-Z
    .
  3. ^ GHS: Sigma-Aldrich 204617
  4. ^ http://www.handbookofmineralogy.org/pdfs/avicennite.pdf Handbook of Mineralogy
  5. S2CID 96808351
    .
  6. doi:10.1021/cm00013a019
    .
  7. ISBN 3-432-87813-3
    (in German)
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