Selenium
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Glass & Ceramic Chemicals
Selenium is a widely used chemical raw material. In the field of ceramics, the addition of selenium powder as a colorant in ceramic glazes can provide different colors for ceramic products. It can also be used as a modifier to improve the physical and chemical properties of ceramics. Selenium powder can also affect the optical properties of ceramics, such as gloss, transparency and so on. It can also give ceramic products (sanitary ceramics, medical ceramics) a certain antibacterial function.
| CAS No. |
7782-49-2
|
| Molecular Formula |
Se
|
|
HS code
|
2804909000
|
| Appearance | Gray to black powder or shot |
| Se | 99.9% Min |
| As (Arsenic) | 30ppm max |
| Hg (Mercury) | 10ppm max |
| Pb (Lead) | 20ppm max |
| Te (Tellurium) | 100ppm max |
| Fe (Iron) | 100ppm max |
| Cr (Chromium) | 50ppm max |
| Co (Cobalt) | 50ppm max |
| Ni (Nickel) | 50ppm max |
| Cu (Copper) | 50ppm max |
| Mn (Manganese) | 50ppm max |
| Total impurities | 0.1% Min |
| Particle Size | Powder: Min 200 mesh, shot: 1-5mm |
Selenium powder is gray or red, and its chemical properties are more active.
It has good photoconductivity and is an important semiconductor material.
Selenium and its compounds are toxic in high concentrations and should be handled with care.
