Selenium (Se) Selenium 
Technical Butt: anode mud - enrichment - electrolysis - Distillation - heavy distillation. 
Inspection: ICP-MS, GDMS, scanning electron microscopy, laser particle size analyzer. 
Services: Provides practical protective measures and MSDS, providing application materials solutions. 
1 Physical properties: 
Atomic Weight: 78.96 
Electronegativity: 2.55 
Density: 4.81 g/cm3 
Melting point: 221 ℃ 
Boiling point: 685 ℃ 
2, Specification: 
Chemical purity: 
High purity selenium: Se-05 99.999% or more, silver, aluminum, bismuth, cadmium, copper, iron, indium, magnesium, nickel, lead, antimony, tellurium total impurity content of less than 10ppm; 
Ultrapure Selenium: Se-06 more than 99.9999% purity, silver, aluminum, bismuth, cadmium, copper, iron, indium, magnesium, nickel, lead, antimony, tellurium total impurity content of less than 1ppm; 
3, the physical traits: Block, ingots, powder. 
4, use: 
Preparation for the main drum materials, optical materials, electrophotographic materials, and other optical instruments, is the production of various metal selenide compound semiconductor base material. 
5, Packing: Polyester film after film vacuum packaging or packaging plastic polyethylene bottles vacuum packaging.