Cas: 63148-62-9
Spherical silica micro powder, also known as silica microspheres, is a high-purity, ultrafine powder composed of spherical silicon dioxide (SiO₂) particles.
Physical and chemical properties
| Property | Description |
|---|---|
| Physical Properties | |
| Molecular Formula | SiO₂ |
| Molecular Weight | 60.08 g/mol |
| Melting Point | >1600°C |
| Boiling Point | >100°C |
| Density | 2.2–2.6 g/mL at 25°C |
| Refractive Index | 1.46 |
| Flash Point | 2230°C |
| Particle Size | 50–200 nm (standard); customizable (e.g., 10 μm in suspension) |
| Morphology | Spherical, white amorphous powder or suspension |
| Surface Area | High specific surface area (e.g., 105–145 m²/g for treated forms) |
| Thermal Conductivity | Low (0.116 W/m·K in composites with 5% hollow silica microspheres) |
Application
The demanders of silicon microsphere powder mainly include the electronics industry, the coating industry, semiconductor packaging, the aviation industry, cosmetics, and liquid crystal display screens.
Packaging and storage
Material: Silica microsphere powder should be packaged in moisture-proof, chemically inert containers, such as double-layered sealed polyethylene bags or aluminum foil bags, with desiccant packs added to absorb residual moisture.
Sealing: Containers must be hermetically sealed to prevent exposure to air, humidity, or contaminants.
Environment: Store in a cool, dry, well-ventilated area away from direct sunlight. Recommended temperature: 15–25°C; relative humidity: ≤60%.
Compatibility: Keep away from incompatible substances (e.g., strong acids, bases, or oxidizers) to prevent chemical reactions.
For more information on Safety Data Sheets (MSDS), Product Safety Data Sheets, and Product Inspection Reports, please contact us.
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