High-Purity Fumed Silica (CAS 7631-86-9): Your Expert Supplier in China
Discover the exceptional properties of fumed silica, a critical amorphous silicon dioxide powder. As a leading manufacturer and supplier in China, we provide high-quality fumed silica essential for enhancing performance in coatings, plastics, rubber, inks, and more. Leverage our competitive pricing and reliable supply chain for your industrial needs.
Get a Quote & SampleUnlocking Performance with Amorphous Fumed Silica

Fumed Silica (CAS 7631-86-9)
We are a trusted manufacturer and supplier of high-purity fumed silica (CAS 7631-86-9) from China. Our fumed silica, presented as a white amorphous powder, is engineered for superior performance, offering exceptional thickening, rheology control, and anti-caking properties. Rely on us for consistent quality and supply of this vital chemical raw material.
- Exceptional Rheology Control: Enhance the viscosity and thixotropic behavior of your formulations, optimizing application properties for products like coatings and adhesives.
- Superior Anti-Caking Properties: Ensure free-flow and prevent clumping in powdered products, a crucial benefit for food additives and pharmaceutical formulations.
- Reinforcing Filler: Improve the mechanical strength and wear resistance of polymers, crucial for applications in rubber and plastics manufacturing.
- High Surface Area & Purity: Our fumed silica boasts a high specific surface area and is processed to meet stringent purity standards, ensuring optimal performance in demanding industrial applications.
Key Advantages of Our Fumed Silica
Optimized Viscosity & Thixotropy
As a premier supplier of fumed silica, we understand its critical role in controlling the flow properties of liquids and semi-solids. Our product helps manufacturers achieve desired viscosity and thixotropic behavior, improving the application and stability of paints, inks, and sealants.
Enhanced Product Stability
Our fumed silica acts as an excellent anti-caking and free-flow agent. This ensures that powdered products, from food supplements to industrial chemicals, remain free-flowing and easy to handle, a key requirement for B2B procurement.
Superior Material Reinforcement
For industries working with polymers, our fumed silica serves as a powerful reinforcing filler. It significantly improves properties like tensile strength, tear resistance, and wear resistance in rubber and plastic compounds, meeting the high-performance demands of product formulators.
Versatile Applications for Fumed Silica
Coatings and Paints
Enhance anti-sagging, anti-settling, and rheological properties in paints and coatings. As a reliable manufacturer, we ensure consistent quality for your formulation needs.
Plastics and Rubber
Improve mechanical strength, hardness, and wear resistance in plastics and rubber products. Source your fumed silica from a dependable Chinese supplier.
Inks and Adhesives
Control viscosity and improve the thixotropic behavior of printing inks and adhesives, ensuring optimal application and performance.
Cosmetics and Personal Care
Utilize its light-diffusing and absorbent properties for enhanced texture and performance in cosmetic formulations. We offer high-purity grades suitable for these sensitive applications.