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Selenium(Se)CAS: 7782-49-2

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Synonyms: C.I. 77805;Colloidal selenium;Elemental selenium;Gray selenium;Selen;Selenate;Selenium alloy;Selenium base;Selenium dust;Selenium elemental;Selenium, colloidal;Selenium, metallic;Vandex; Classification: Elementary Substances
EINECS: 231-957-4 Molecular Formula: Se
Melting Point: 217℃ Boiling Point: 685℃
Stability: Stable. Incompatible with strong acids, strong oxidizing agents and most common metals. Combustible. Water Solubility: insoluble
Refractive index: Flash Point:
Purity: 99.999%,99.9999% Appearance: black
HazardClass: Brand Name: Alfa
Packaging & Delivery
Packaging Detail: Vacuum package by bottle or bag
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Detailed Description

 Selenium (Se)

Physical character:

Atomic Weight: 78.96

Electronegative: 2.48

Density: ρ=4.82 g/cm3

Melting Point: mp: 217

Boiling Point: bp: 684.9


High Purity Selenium:

Se-05 Grade 99.999. The content of Selenium is above 99.999%. The total content of Ag, Al, Bi, Cd, Cu, Fe, Ga, In, Mg, Ni, Pb, Sb, Te & Tl is bellow 10 ppm;

Uitra Purity Selenium:

Se-06 Grade 99.9999. The content of Selenium is above 99.9999%. The total content of Ag, Al, Au, Bi, Co, Cu, Fe & Ni is bellow 1 ppm.

Physical Size:

Virgulate, Powder.


It is mainly used in the preparation of the material of the selenium drum, photoelectric material, electrostatic photogragh and other materials of optical instrument..


It is packed with dacron film, then covered with a sealed plastic film bag.


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