86370

Tellurium dioxide

≥97.0%

• Synonym(s): Telluria, Tellurium oxide
• 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: 57653113
• NACRES: NA.23

Properties

• Quality Level: 100
• 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

Description

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.

Safety Information

• pictograms: GHS08,GHS07,GHS09
• signalword: Danger
• hcodes: H317,H332,H360Df,H362,H411
• pcodes: P260 - P263 - P273 - P280 - P304 + P340 + P312 - P308 + P313
• 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_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)