Selenium powder is black amorphous particle, which is a kind of nonmetal. After heating, it cool to glassy form. Its monoclinic crystal is red, however hexagonal crystal is grey. It is insoluble in water, hydrochloric acid and dilute sulphuric acid, but soluble in nitric acid, carbon disulfide, benzene and quinoline. High purity selenium and nano selenium powder are both available.
|CAS No.:7782-49-2||EINECS No.:231-957-4||Molecular Formula:Se||Molecular Weight:78.96|
|Melting Point:220.2℃||Boiling Point:685℃||Density:4.82|
Pure selenium is mainly for selenium dioxide production, which is catalyst for electrolytic manganese smelting.
High purity selenium is raw material for production of zinc selenide compounds, powder of xerography and other metal selenium compounds. It is for epitaxial diffusion process of semiconductor productions. It apply to selenium rectifier, phototube, photocell, radio communications copy and photograph.
Selenium nano powder is an kind of analytical reagent too. It can as dehydrogenating agent of aromatic compounds.