Silicon Dioxide (SiO₂) nanopowder consists of ultra-fine silica particles known for their high surface area, excellent thermal stability, and chemical inertness. It is widely used in electronics, coatings, pharmaceuticals, catalysis, and nanocomposites.

Chemical Properties and CAS Number

• Chemical Formula: SiO₂
• CAS Number: 7631-86-9
• Appearance: White fine powder
• Density: Approximately 2.65 g/cm³
• Melting Point: ~1,713°C
• Solubility: Insoluble in water, soluble in hydrofluoric acid
• Chemical Stability: Highly stable under normal conditions, resistant to oxidation and high temperatures

Applications of Silicon Dioxide Nanoparticles

1. Electronics and Semiconductor Industry

Used in microelectronics, semiconductor devices, and optical coatings due to its insulating properties and optical clarity.

2. Coatings and Surface Modification

Applied in protective coatings, anti-reflective films, and superhydrophobic surfaces for industrial and consumer applications.

3. Pharmaceuticals and Drug Delivery

Utilized in controlled drug release, excipients, and bioactive materials due to its biocompatibility and non-toxicity.

4. Catalysis and Chemical Processing

Employed as a catalyst support in petrochemical refining, environmental remediation, and industrial chemical reactions.

5. Nanocomposites and Advanced Materials

Used as a reinforcing agent in polymers, ceramics, and composites to improve mechanical strength and thermal resistance.

6. Food and Cosmetics Industry

Incorporated as an anti-caking agent, food additive, and stabilizer in cosmetics, personal care products, and nutritional supplements.

Pricing of Silicon Dioxide Nanopowder

Prices vary based on purity, particle size, synthesis method, and specific application requirements:

• Industrial Grade: Typically ranges from $20 – $150 per kilogram
• High-Purity/Specialized Grade: Prices range from $300 – $1,500 per kilogram, used in electronics, pharmaceuticals, and nanotechnology applications.

Factors Influencing Silicon Dioxide Powder Prices

• Purity level and particle size distribution
• Functionalization and surface modifications
• Processing complexity and synthesis method
• Bulk order volume and market demand

Conclusion

Silicon Dioxide (SiO₂) nanopowder is a highly versatile material used in electronics, coatings, catalysis, and pharmaceuticals. Its excellent chemical stability, high surface area, and wide-ranging applications make it essential for advanced industrial technologies. Pricing depends on purity, particle specifications, and intended use.