Fumed Silica
| Chemical Name: | Fumed Silica |
| Alias: | Fumed Silica, Silicon Dioxide, Fumed White Carbon Black |
| Product Category: | White Carbon Black – Product |
| CAS No.: | 7631-86-9 |
| Classification: | Silicon Dioxide |
| Grade Standard: | Industrial Grade |
| HS Code: | 2811229000 |
| Quality: | First Class |
| Transport Package: | 10kg/Bag |
Fumed Silica Describe
Fumed Silica (CAS No. 7631-86-9), also known as fumed white carbon black, is a high-tech ultrafine inorganic material with exceptional purity and performance. Appearing as a white, non-toxic, tasteless, and pollution-free fluffy powder, it features a small particle size, large specific surface area, strong adsorption capacity, high chemical stability, and excellent dispersion.
Key Features & Benefits:
✅ Reinforcement & Thickening: Enhances mechanical strength in rubber, plastics, and coatings.
✅ Thixotropy & Stability: Improves viscosity control and anti-settling properties in inks, paints, and adhesives.
✅ Heat & Chemical Resistance: Ensures durability in demanding industrial applications.
✅ Versatile Applications: Used in rubber, plastics, coatings, inks, cosmetics, pharmaceuticals, petrochemicals, environmental protection, and insulation materials.
With its unique physical and chemical properties, nano-silica plays a crucial role in enhancing product performance, optimizing formulations, and supporting advancements in various industries.
✅ Thixotropy & Stability: Improves viscosity control and anti-settling properties in inks, paints, and adhesives.
✅ Heat & Chemical Resistance: Ensures durability in demanding industrial applications.
✅ Versatile Applications: Used in rubber, plastics, coatings, inks, cosmetics, pharmaceuticals, petrochemicals, environmental protection, and insulation materials.
| Item No | Index | Measured Value |
| Appearance | White powder | Compliance index |
| Specific surface area of nitrogen adsorption m²/g | 200±10 | 200 |
| Sio2- content | >99.8 | 99.9% |
| Ph | 3.7-4.5 | 4.19 |
| Volatile matter % at 105 ºC | ≤3.0 | 0.82 |
| Tamping density g/dm³ | 30-60 | 31 |
| Sieve residue(45μm) mg/kg | ≤250 | 19.93 |
| Model No | RS-GE200 |
| Appearance | white powder |
| Grade | First class |
| HS code | 2811229000 |
| Free sample | Support |
| Packing | 20’GP:10kg/bag;200kg/pallet;2mt/fcl 40’GP:10kg/bag;200kg/pallet;4mt/fcl |
| Delivery time | 5-7 days after payment |
| Production Capacity | 5000mt/year |
Applications of Fumed Silica
Fumed silica is widely used in industrial and consumer products, but proper handling is essential due to potential health risks.
Key Applications:
✔ Resin Additives & Pharmaceuticals – Used in medicine, food, and specialty chemicals.
✔ Rubber & Adhesives – Enhances sealants, silica gel, adhesives, and tile grout.
✔ Paints & Coatings – Improves viscosity and durability in paints, coatings, and UPR.
✔ Electronics – Key in CMP suspensions for semiconductor processing.
✔ Printing – Enhances digital photo paper quality.
Fumed silica offers reinforcement, thickening, and stability across industries but requires safe handling.
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Fumed Silica : Guide
Silica includes Precipitated Silica, Fumed Silica, Ultrafine Silica Gels, and Synthetic Silicates, widely used for reinforcement, thickening, and rheology control.
Main Benefits:
✔ Strength & Durability – Improves tensile strength, toughness, and impact resistance.
✔ Thickening & Flow Control – Enhances viscosity, stability, and application performance.
✔ Anti-Caking & Free Flow – Prevents clumping in powders.
✔ Sag & Drip Resistance – Ensures smooth application in coatings and adhesives.
✔ Heat & Thermal Stability – Provides insulation and heat resistance.
Used in coatings, adhesives, rubber, plastics, and pharmaceuticals, silica enhances performance and stability across industries.
✔ Thickening & Flow Control – Enhances viscosity, stability, and application performance.
✔ Anti-Caking & Free Flow – Prevents clumping in powders.
✔ Sag & Drip Resistance – Ensures smooth application in coatings and adhesives.
✔ Heat & Thermal Stability – Provides insulation and heat resistance.
