Selenium Metal (Se)-Powder

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Selenium is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.

Properties:

Melting point 494 K (221 °C, 430 °F)

Boiling point 958 K (685 °C, 1265 °F)

Density (near r.t.) gray: 4.81 g/cm^3/alpha: 4.39 g/cm^3/vitreous: 4.28 g/cm³

Application

The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have been mostly replaced with silicon semiconductor devices. Selenium is still used in a few types of DC power surge protectors and one type of fluorescent quantum dot.