243450
Tellurium dioxide
≥99%
Synonym(s):
Tellurium(IV) oxide
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About This Item
Linear Formula:
TeO2
CAS Number:
Molecular Weight:
159.60
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352303
EC Number:
231-193-1
MDL number:
Quality Level
assay
≥99%
form
powder
mp
733 °C (lit.)
density
5.67 g/mL at 25 °C (lit.)
SMILES string
O=[Te]=O
InChI
1S/O2Te/c1-3-2
InChI key
LAJZODKXOMJMPK-UHFFFAOYSA-N
General description
Tellurium dioxide, also known as tellurium(IV) oxide, is a white, crystalline solid with a melting point of 1,130 °C and a boiling point of 1,850 °C. Tellurium dioxide is an important material in a number of applications, including as a catalyst in the synthesis of plastics resins, and pharmaceuticals, and as a component in tellurium-based alloys. Tellurium dioxide is typically made at high temperatures either by decomposition of tellurium(IV) chloride or tellurium(IV) sulfate in the presence of oxygen.
Application
Tellurium dioxide is used to prepare tellurium metal, telluric acid, and many tellurium salts. It may also be used in the preparation of Ag2Te nanoparticles.
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Danger
Hazard Classifications
Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Lact. - Repr. 1B - Skin Sens. 1B
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Mao Shen et al.
Nanoscale research letters, 8(1), 253-253 (2013-05-31)
A facile one-step synthesis of CdTe quantum dots (QDs) in aqueous solution by atmospheric microwave reactor has been developed using 3-mercaptopropionic acid reduction of TeO2 directly. The obtained CdTe QDs were characterized by ultraviolet-visible spectroscopy, fluorescent spectroscopy, X-ray powder diffraction
Tingjun Wu et al.
Frontiers in chemistry, 8, 84-84 (2020-03-21)
A systematic electrochemical study was conducted to investigate the reduction of tellurium (Te) in alkaline solutions. The effect of various parameters, including tellurite ion concentration, applied potential, and pH was investigated by both linear sweep voltammograms (LSVs) and electrochemical quartz
Edmond P F Lee et al.
The Journal of chemical physics, 121(7), 2962-2974 (2004-08-05)
Ab initio calculations have been carried out on low-lying singlet and triplet states of TeO2 at different levels of theory with basis sets of up to the augmented-polarized valence-quintuple-zeta quality. Equilibrium geometrical parameters, harmonic vibrational frequencies, and relative electronic energies
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 243450-250G | 04061835561858 |
| 243450-50G | 04061835561865 |