Differences between Precipitated Silica and Fumed Silica
White carbon is the general term for silicate products and white amorphous powdered silicate. They are known for various types of product lines such as: precipitated silica, fumed silica, etc., depending on the production method.
Key differences between Precipitated Silica and Fumed Silica
1.Fumed Silica
- White amorphous nano particles
- Non-toxic and has a larger specific surface area than Precipitated Silica
- Product purity can exceed 99,8%
- Production method: thermal decomposition or combustion method. Its raw materials are silicon tetrachloride, oxygen (or air) and hydrogen, formed by high-temperature reactions.
2.Precipitated Silica
- White amorphous micro particles.
- Non-toxic and has a large specific surface area.
- Product purity can exceed 95%.
- Precipitation method, also called sodium silicate acidification method. Uses sodium silicate solution reacting with acid to obtain silica through precipitation, filteration, washing, drying, calcination and sodium sulfate
Applications of Precipitated Silica and Fumed Silica
Precipitated Silica or Fumed Silica are products with high applicability in industrial and food industry. However, for some products requiring good dispersion, Fumed Silica will provide a better quality than Precipitated Silica, examples include:
- Oil-based painting products: Require good dispersion.
- Pharmaceuticals: Liquid products, vitamin products requiring carrier.
- Cosmetics: Color retention ability, increased adhesion, increased mixture uniformity.
- Food: Anti-caking agents for spice powder products.
- Waterproofing products: Hydrophobic Fumed Silica has the ability to effectively enhance the waterproofing for construction materials.
To learn more about Precipitated Silica and Fumed Silica, customers can refer to our website, or contact us directly following the information: HUST MEN JSC
Hotline: 093.323.1996