266418

Tellurium

powder, −200 mesh, 99.8% trace metals basis

• Fórmula empírica (notación de Hill): Te
• Número de CAS: 13494-80-9
• Peso molecular: 127.60
• EC Number: 236-813-4
• MDL number: MFCD00134062
• UNSPSC Code: 12141913
• PubChem Substance ID: 24856140
• NACRES: NA.23

Propiedades

• Quality Level: 100
• assay: 99.8% trace metals basis
• form: powder
• resistivity: 5.8-33 μΩ-cm, 20°C
• particle size: −200 mesh
• bp: 990 °C (lit.)
• mp: 450 °C (lit.)
• density: 6.24 g/mL at 25 °C (lit.)
• SMILES string: [Te]
• InChI: 1S/Te
• InChI key: PORWMNRCUJJQNO-UHFFFAOYSA-N

Descripción

General description

Tellurium is anon-radioactive and heaviest member of the chalcogen family. It has a widerange of oxidation states, from -2 to +6. It is widely used in the fields ofmetallurgy and electronics.

Application

Tellurium can be used as a precursor to prepare:

• Tellurium-based nanomaterials for semiconductor application, such as CdTe nanoparticles via solvothermal synthesis.
• Quantum dot solutions for fluorometric determination of bioactive compounds.
• Thermoelectricmaterials, such as Cu₄Mn₂Te₄ by the melting-quenching-SPS method.

Tellurium, in combination with potassium hydroxide, mediates the quantitative pinacolization of aromatic carbonyl compounds.

Información de seguridad

• pictograms: GHS08,GHS07
• signalword: Danger
• hcodes: H317,H332,H360Df,H362,H413
• pcodes: P260 - P263 - P273 - P280 - P304 + P340 + P312 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Inhalation - Aquatic Chronic 4 - 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 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges