266418

Tellur

powder, −200 mesh, 99.8% trace metals basis

• Empirische Formel (Hill-System): Te
• CAS-Nummer: 13494-80-9
• Molekulargewicht: 127.60
• EG-Nummer: 236-813-4
• MDL-Nummer: MFCD00134062
• UNSPSC-Code: 12141913
• PubChem Substanz-ID: 24856140
• NACRES: NA.23

Eigenschaften

• Assay: 99.8% trace metals basis
• Form: powder
• Widerstandsfähigkeit: 5.8-33 μΩ-cm, 20°C
• Partikelgröße: −200 mesh
• bp: 990 °C (lit.)
• mp (Schmelzpunkt): 450 °C (lit.)
• Dichte: 6.24 g/mL at 25 °C (lit.)
• SMILES String: [Te]
• InChI: 1S/Te
• InChIKey: PORWMNRCUJJQNO-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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

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.

Sicherheitshinweise

• Piktogramme: GHS08,GHS07
• Signalwort: Danger
• H-Sätze: H317,H332,H360Df,H362,H413
• P-Sätze: P260 - P263 - P273 - P280 - P304 + P340 + P312 - P308 + P313
• Gefahreneinstufungen: Acute Tox. 4 Inhalation - Aquatic Chronic 4 - Lact. - Repr. 1B - Skin Sens. 1B
• Lagerklassenschlüssel: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 2
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges