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Tellurium oxide

CAS No.
13451-18-8
Chemical Name:
Tellurium oxide
Synonyms
TELLURIUM OXIDE;TELLURIUM OXIDE;Tellurium(Ⅳ)oxide;TELLURIUM TRIOXIDE;Tellurium(VI) oxide;Tellurium oxide (IV);Tellurium(VI) trioxide;tellurium(III) trioxide;tellurium trioxide,99.9%;Tellurium oxide (119TeO2)
CBNumber:
CB0175151
Molecular Formula:
O3Te
Lewis structure
teo3 lewis structure
Molecular Weight:
175.6
MDL Number:
MFCD00054085
MOL File:
13451-18-8.mol
Last updated:2023-10-17 17:11:57

Tellurium oxide Properties

Melting point 733°C
Density 5.67
solubility insoluble in H2O
form yellow-orange crystals
color yellow-orange crystals, crystalline
CAS DataBase Reference 13451-18-8
FDA UNII GC5SXW83F8
EPA Substance Registry System Tellurium oxide (TeO3) (13451-18-8)

SAFETY

Risk and Safety Statements

RIDADR  1479
HazardClass  5.1
PackingGroup  II

Tellurium oxide Chemical Properties,Uses,Production

Description

Tellurium oxide is a general term for the binary compounds of oxygen and tellurium, commonly known as tellurium oxide TeO and tellurium dioxide TeO2, tellurium pentoxide Te2O5 and tellurium trioxide TeO3. Among these four oxides, tellurium oxide is basic, tellurium dioxide is amphoteric, and tellurium pentoxide and tellurium trioxide are acidic. Tellurium oxide is a gray-black solid, and its presence indicates that tellurium is more metallic than sulfur and selenium. Tellurium dioxide is a non-volatile white solid with a relative density of 5.67, a melting point of 733°C, a boiling point of 1245°C, and is toxic! Difficult to dissolve in water, can dissolve in sodium hydroxide to generate sodium tellurite, with nitric acid acidification there are white flakes of tellurite H2TeO3 precipitation. Tellurium dioxide can be reduced to tellurium monomers by hydrogen when heated.

Chemical Properties

-60 mesh with 99.9% purity; two forms: yellowish orange α, and grayish β; αis a strong oxidant, e.g. reacting vigorously with Al, Sn, C, P and S [KIR83] [CER91]

Uses

Tellurium oxide is used in the preparation of tellurites, emission spectroscopy, and electronic component materials.It is also used as a brightener in electroplating solutions, as a catalyst for oil cracking, and as a colorant for ceramics and glass.

Synthesis

Tellurium trioxide, β-TeO3, is formed via thermal decomposition of Te(OH)6. 

Tellurium oxide Preparation Products And Raw materials

Raw materials

Preparation Products

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Tellurium(Ⅳ)oxide Tellurium oxide (119TeO2) Tellurium(VI) oxide Tellurium(VI) trioxide TELLURIUM OXIDE TELLURIUM TRIOXIDE TELLURIUM TRIOXIDE ISO 9001:2015 REACH tellurium(III) trioxide Tellurium oxide (IV) TELLURIUM OXIDE tellurium trioxide,99.9% 13451-18-8