Selenium Barren

Selenium (Se) 1, Physical character: Atomic Weight: 78.96 Electronegative: 2.48 Density: ρ=4.82 g/cm3 Melting Point: mp: 217 °C Boiling Point: bp: 684.9 °C 2, Specification: 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, Co, In, Mg, Ni, Pb, Sb, Te, Zn, Mn,Ca & 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, Mg, Au, Bi, Cd, Co, In, Cu, Fe, Te, Pb & Ni is bellow 1 ppm. 3, Physical Size: Virgulate, 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.