86370
Tellurium dioxide
≥97.0%
Synonym(s):
Telluria, Tellurium oxide
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About This Item
Linear Formula:
TeO2
CAS Number:
Molecular Weight:
159.60
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23
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Quality Level
Assay
≥97.0%
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
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General description
Tellurium dioxide (TeO2) is a ceramic material that can be used as a semiconducting oxide. It has a wide band gap and high mobility as determined by density functional theory (DFT) calculations. In bulk quantity, it exists in two polymorphs which include tetragonal α-TeO2 and orthorhombic β-TeO2.
Application
TeO2 can be potentially used in medical imaging and industrial monitoring processes.
Signal Word
Danger
Hazard Statements
Precautionary Statements
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
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In this work, we report the near-infrared emission properties of Tm(3+)-Er(3+) codoped tellurite TeO(2)-WO(3)-PbO glasses under 794 nm excitation. A broad emission from 1350 to 1750 nm corresponding to the Tm(3+) and Er(3+) emissions is observed. The full width at
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We report on spectroscopic properties and energy transfer of Tm(3+)/Ho(3+)-codoped tungsten tellurite glasses for 1.47microm amplifier. Fluorescence spectra and the analysis of energy transfer indicate that Ho(3+) is an excellent codopant for 1.47microm emission. Comparing with other tellurite glasses, the
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The new Er3+/Yb3+ co-doped 70TeO2-5Li2O-(25-x)B2O3-xGeO2 (x = 0, 5, 10, 15 fand 20 mol.%) glasses were prepared. The thermal stability, absorption spectra, emission spectra and lifetime of the 4I(13/2) level of Er3+ ions were measured and studied. The FT-IR spectra
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