Thallium(III) oxide

Product NameThallium(III) oxide
CAS1314-32-5
MFO3Tl2
MW456.76
EINECS215-229-3
MOL File1314-32-5.mol

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

Crystal Structure

Sc2O3 type

crystal system

Cube

Merck

14,9268

Space group

Ia3

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
1.0543	1.0543	1.0543	90	90	90	1.1719

InChI

1S/3O.2Tl

InChIKey

QTQRFJQXXUPYDI-UHFFFAOYSA-N

SMILES

O=[Tl]O[Tl]=O

CAS DataBase Reference

1314-32-5(CAS DataBase Reference)

EPA Substance Registry System

Thallium(III) oxide (1314-32-5)

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	TSCA listed
HazardClass	6.1
PackingGroup	II
Storage Class	6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
Hazard Classifications	Acute Tox. 2 Inhalation Acute Tox. 2 Oral Aquatic Chronic 2 STOT RE 2
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

Provider	Language
SigmaAldrich	English
ALFA	English

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

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

Uses

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

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.

reaction suitability

reagent type: catalyst
core: thallium

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.

Thallium(III) oxide

Chemical Properties

Safety Information

MSDS

Usage And Synthesis

Preparation Products And Raw materials

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