|
HS Code |
212511 |
| Chemical Name | Fumed Silica |
| Chemical Formula | SiO2 |
| Appearance | White, odorless, fine amorphous powder |
| Particle Size | 5-50 nanometers (primary particles) |
| Bulk Density | 40-60 kg/m³ |
| Specific Surface Area | 100-400 m²/g |
| Density | 2.2 g/cm³ (true density) |
| Ph Value | 3.5-4.5 (in 4% dispersion) |
| Melting Point | Approximately 1710°C |
| Solubility In Water | Insoluble |
| Refractive Index | 1.46 |
| Moisture Content | < 2% |
| Cas Number | 112945-52-5 |
As an accredited Fumed Silica factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Fumed Silica is packaged in a 10 kg moisture-proof, multi-layer kraft paper bag with inner plastic lining for safe handling. |
| Container Loading (20′ FCL) | 20′ FCL can load about 3,000–3,500 kg Fumed Silica, packed in 10kg or 20kg bags, typically palletized for stability. |
| Shipping | Fumed Silica is shipped as a fine, lightweight, white powder, typically in multi-layer paper bags or fiber drums with inner liners to prevent moisture absorption. The containers are sealed and properly labeled according to hazard regulations. It should be kept dry, away from incompatible substances, and handled to avoid dust generation. |
| Storage | Fumed silica should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from moisture and sources of ignition. Avoid exposure to strong acids and bases. Prevent container damage and minimize dust generation during handling, as the fine powder can become airborne. Proper labeling and storage away from incompatible substances ensure safe handling and long-term stability. |
| Shelf Life | Fumed silica typically has an indefinite shelf life if stored in tightly sealed containers, away from moisture, heat, and direct sunlight. |
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Surface Area: Fumed Silica with a high surface area is used in silicone sealants, where it enhances thickening efficiency and sag resistance. Particle Size: Fumed Silica of ultra-fine particle size is used in automotive coatings, where it improves scratch resistance and surface smoothness. Purity: Fumed Silica with 99.8% purity is used in pharmaceutical tablets, where it ensures superior flowability and uniformity of powder blends. Hydrophobicity: Fumed Silica with hydrophobic modification is used in adhesives, where it improves water repellency and shelf-life stability. pH Value: Fumed Silica with neutral pH is used in water-based paints, where it minimizes adverse chemical interactions and promotes color retention. BET Surface Area: Fumed Silica with a BET surface area of 200 m²/g is used in epoxy composites, where it maximizes reinforcement and reduces shrinkage. Thermal Stability: Fumed Silica with thermal stability up to 1000°C is used in heat-resistant insulation materials, where it maintains structural integrity under extreme temperatures. Viscosity Grade: Fumed Silica with high viscosity grade is used in printing inks, where it enhances suspension of pigments and prevents settling. Moisture Content: Fumed Silica with low moisture content (<0.5%) is used in powder coatings, where it prevents clumping and ensures free-flow properties. Refractive Index: Fumed Silica with a refractive index of 1.46 is used in optical polymers, where it provides optical clarity and consistent light transmission. |
Competitive Fumed Silica prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@bouling-chem.com.
We will respond to you as soon as possible.
Tel: +8615651039172
Email: sales9@bouling-chem.com
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