204552

Tellurium dioxide

99.995% trace metals basis

• Synonym(s): Telluria, Tellurium (IV) oxide, 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: 24852276
• NACRES: NA.23

Properties

• Quality Level: 100
• 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

Description

General description

Telluriumdioxide, also known as tellurium(IV) oxide, is a white powder with a melting point of 733 °C. TeO₂ is characterized by its unique propertiesand is widely used in various applications, including optics, electronics, andas a precursor for the synthesis of tellurium-based materials. It is recognized for its strong optical characteristics and is employed in the production of optical fibers and other photonic devices. Additionally, it plays a crucial role in the preparation of diverse tellurium compounds for various chemical transformations. Our high-purity tellurium dioxide powder is distinguished by its low impurity levels, making it particularly suitable for sensitive electronic applications.

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.

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)