Characteristic

 

Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid.

Phase at STP：solid

Appearance：silvery lustrous gray (crystalline),

brown-black powder (amorphous)

Melting point：722.66 K (449.51 °C, 841.12 °F)

Boiling point：1261 K (988 °C, 1810 °F)

Density (near r.t.)：6.24 g/cm³

when liquid (at m.p.)：5.70 g/cm³

Heat of fusion：17.49 kJ/mol

Heat of vaporization：114.1 kJ/mol

Molar heat capacity：25.73 J/(mol·K)

 

Application

 

Commercially, the primary use of tellurium is copper (tellurium copper) and steel alloys, where it improves machinability. Applications in CdTe solar panels and cadmium telluride semiconductors also consume a considerable portion of tellurium production. Tellurium is considered a technology-critical element.

Tellurium_MSDS.pdf