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204552

Sigma-Aldrich

Tellurium dioxide

99.995% trace metals basis

Synonym(s):

Telluria, Tellurium (IV) oxide, Tellurium oxide

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About This Item

Linear Formula:
TeO2
CAS Number:
7446-07-3
Molecular Weight:
159.60
EC Number:
231-193-1
MDL number:
MFCD00011263
UNSPSC Code:
12352303
PubChem Substance ID:
24852276
NACRES:
NA.23

Assay

99.995% trace metals basis

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

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Application

Tellurium dioxide can be used:
  • As a seed layer to fabricate hole-extracting electrodes in an organic photovoltaic device. The addition of TeO2 enhances the optical transmittance of the electrode.
  • As a starting material to prepare tellurite glasses for gamma radiation shielding and other optical applications.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Lact. - Repr. 1B - Skin Sens. 1B

Storage Class Code

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Sankha Chattopadhyay et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 67(10), 1748-1750 (2009-05-05)
A simple and inexpensive method for the separation of medically useful no-carrier-added (nca) iodine radionuclides from bulk amounts of irradiated tellurium dioxide (TeO(2)) target was developed. The beta(-) emitting (131)I radionuclide, produced by the decay of (131)Te through the (nat)Te(n
Sankha Chattopadhyay et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 68(10), 1967-1969 (2010-05-18)
A simple and inexpensive ion-exchange chromatography method for the separation of medically useful no-carrier-added (nca) iodine radionuclides from bulk amounts of irradiated tellurium dioxide (TeO(2)) target was developed and tested using (131)I. The radiochemical separation was performed using a very
Nirupama Rai et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 76(3-4), 311-314 (2010-05-01)
Frequency upconversion in triply ionized praseodymium doped glass with composition TeO(2)-Na(2)O (TNO) system under the excitation with a laser light from a dye laser has been reported and the covalency, bonding parameter, nephalauxetic effect which provides the information about the
G Bilir et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 83(1), 314-321 (2011-09-20)
TeO(2)-CdF(2)-WO(3) glasses with various compositions and Er(3+) concentrations were prepared by conventional melting method. Their optical properties were studied by measuring the absorption, luminescence spectra and the decay patterns at room temperature. From the optical absorption spectra the Judd-Ofelt parameters
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
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