Description
Overview
Selenium, a non-metal with semiconductor characteristics, is primarily obtained as a byproduct during the refining of copper ores, undergoing purification processes to achieve the quality required for specialized applications. Valued for its photovoltaic and photoconductive properties, selenium efficiently converts light into electricity, making it a key material in solar cells, photocopiers, and photographic exposure meters. Available in forms such as powder or granules, it is also used in glass manufacturing to reduce solar heat transmission and in the production of pigments for ceramics and plastics. Selenium’s versatility and growing role in renewable energy technologies highlight its importance, while its recyclability supports sustainable practices in the technology metals sector.
Properties
- Composition: Typically 99.9% or higher pure selenium.
- Density: 4.81 g/cm³ (gray crystalline form).
- Melting Point: 221°C (430°F).
- Color: Shiny gray (crystalline); can appear reddish or black in other forms.
- Malleability: Brittle, not malleable.
- Ductility: Not ductile, cannot be drawn into wires.
- Electrical Conductivity: Semiconductor, resistivity ~10^4–10^6 Ω·cm; conductivity increases with light exposure (photoconductive).
- Thermal Conductivity: Low, ~2–3 W/(m·K) at 20°C.
- Corrosion Resistance: Stable in air; reacts with strong acids and alkalis.
Applications
- Photovoltaic cells
- Glass decolorizing
- Pigments
- Nutritional supplements
Packaging options
Standard Format:
Powder or shot, 1–10 kg
Packaging:
Vacuum-sealed bags
Custom Sizes Available:
: Available as pellets
Market outlook
Selenium prices are ~$50–$100/kg, driven by solar and glass industries. Supply is stable (Japan, Belgium), but demand is growing with renewables.
Purchase & Compliance
Certificate of analysis provided. Third-party testing available. Safety data sheets required due to toxicity.
If you’d like more details on any of these materials, such as specific applications, market trends, or technical specifications, send us a message!
