Selenium (Se)

 

1, Physical character:

 

Atomic Weight: 78.96

 

Electronegative: 2.55

 

Density: p=4.81 g·cm-3

 

Melting Point: 221 ℃

 

Boiling Point: 685 ℃

 

2, Specification:

 

High Purity Selenium:

 

Se-04 Grade 99.99. The content of Selenium is above 99.99%. The total content of Ag, Al, Bi, Cd, Cu, Fe, In, Mg, Ni, Pb, Sb, Te is bellow 100 ppm;

 

Se-05 Grade 99.999. The content of Selenium is above 99.999%. The total content of Ag, Al, Bi, Cd, Cu, Fe, In, Mg, Ni, Pb, Sb, Te 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, Bi, Cd, Cu, Fe, In, Mg, Ni, Pb, Sb, Te is bellow 1 ppm.

 

3, Physical Size:

 

Granule, Powder.

 

4, Usage:

 

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

 

5, Packing:

 

It is packed with dacron film, then covered with a sealed plastic film bag or vacuum sealed in a polyethylene bottle.