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THALLIUM(III) OXIDE

Basic information Safety Supplier Related

THALLIUM(III) OXIDE Basic information

Product Name:
THALLIUM(III) OXIDE
Synonyms:
  • THALLIUM(+3)OXIDE
  • THALLIC OXIDE
  • THALLIUM (IC) OXIDE
  • THALLIUM(III) OXIDE
  • Thallium trioxide
  • THALLIUM OXIDE
  • THALLIUM OXIDE (IC)
  • THALLIUM PEROXIDE
CAS:
1314-32-5
MF:
O3Tl2
MW:
456.76
EINECS:
215-229-3
Product Categories:
  • metal oxide
  • ThalliumMetal and Ceramic Science
  • Catalysis and Inorganic Chemistry
  • Chemical Synthesis
  • Oxides
  • Thallium
Mol File:
1314-32-5.mol
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THALLIUM(III) OXIDE Chemical Properties

Melting point:
717 °C(lit.)
Boiling point:
875°C
Density 
9,65 g/cm3
Flash point:
875°C
solubility 
insoluble in H2O; reacts with acid solutions
form 
Powder
color 
black
Water Solubility 
Insoluble in water and alkalis. Decomposes in HCl and H2SO4
Merck 
14,9268
CAS DataBase Reference
1314-32-5(CAS DataBase Reference)
EPA Substance Registry System
Thallium(III) oxide (1314-32-5)
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Safety Information

Hazard Codes 
T+,N
Risk Statements 
26/28-33-51/53
Safety Statements 
13-28-45-61
RIDADR 
UN 1707 6.1/PG 2
WGK Germany 
3
RTECS 
XG2975000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
Hazardous Substances Data
1314-32-5(Hazardous Substances Data)
Toxicity
dog,LDLo,oral,34mg/kg (34mg/kg),American Industrial Hygiene Association Journal. Vol. 21, Pg. 399, 1960.

MSDS

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THALLIUM(III) OXIDE Usage And Synthesis

Chemical Properties

Thallium oxide is a solid, very dark brown and odourless chemical substance. Thallium oxide is stable under normal temperatures and pressures.
It is insoluble in water. Thallium oxide has been used to produce glasses with a high index of refraction.

Uses

Thallium(III) oxide is used in organic synthesis and as an analytical reagent

Uses

Analysis (testing for ozone), artificial gem, optical glass of high refractive index.

Production Methods

Thallium oxide is produced either by the chlorine-induced oxidation of thallous nitrate in an aqueous potassium hydroxide solution, followed by thallium reaction with oxygen, or from hydrogen peroxide and an alkaline thallium(I) solution ; or either form of thallous oxide oxidation. The oxide is an intermediate that can be formed during annealing or heating of semiconductors in air.

General Description

Brown powder. Insoluble in water.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

A mixture of THALLIUM(III) OXIDE and antimony sulfide or sulfur explodes when ground in a mortar [Mellor 5:421 1946-47]. THALLIUM(III) OXIDE is decomposed by HCl with evolution of chlorine gas, and by H2SO4 with evolution of oxygen.

Safety Profile

Poison by ingestion, intraperitoneal, and intravenous routes. Combustible by chemical reaction. Evolves O2 @ 875°C. Mixtures with sulfur orantimony trisulfide explode when ground. Hydrogen sulfide ignites and may explode weakly on contact with the oxide. When heated to decomposition it emits toxic fumes of T1. See also THALLIUM COMPOUNDS.

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