Precipitated Silica Highly Active Hydrated Silica Powder (SiO₂)
- SD-185P
- Fujian
- 7-10days
- 100,000T/year
Precipitated Silica Powder is prepared by the precipitation process and refined through the reaction of sodium silicate with acid. It features uniform particle size distribution, controllable porosity and high cost performance. It is widely used as a functional filler in industries such as rubber, toothpaste, pesticides and feed, and can significantly improve the rheological properties, adsorption capacity and mechanical strength of products.
Core advantage
🔹 Process advantage: Precipitation method, more cost-effective than gas phase method
🔹 Particle size controllable: D50 particle size range 1-20μm (customizable)
🔹 High oil absorption: 1.5-2.5ml/g, improves material dispersibility
🔹 Low ion residue: Na₂O content < 0.3% to prevent product deterioration
🔹 Environmental-friendly process: Wastewater is recycled in compliance with RoHS standards
Parameters:
| Type | Bestfortune | Bestfortune | |
| SD-185P | SD-185G | ||
| Appearance | Unit | Powder | Granular |
| BET specific surface area | m2/g | 170-195 | |
| Silica(dry basis) | % | ≥ 90 | |
| Heating loss (2h at 105°C) | % | 4.0-8.0 | |
| Loss on ignition (2h at 1000±25°C) | % | ≤7.0 | |
| PH-value (10%aqueous solution) | 6.0-8.0 | ||
| DBP Oil Absorption Value | cm3/g | 2.0-3.5 | |
| 45um sieve Residue | % | ≤ 0.5 | |
| Soluble salt (Na2SO4) | % | ≤ 1.5 | |
| Cu | mg/kg | ≤ 10 | |
| Mn | mg/kg | ≤ 40 | |
| Fe | mg/kg | ≤ 500 | |
Application scenarios
❶ Toothpaste Industry
Replace the abrasive calcium carbonate and provide a milder friction value (RDA 80-120).
❷ Rubber products
It is used for shoe soles, silicone tubes, etc., and its reinforcing effect can reach over 80% of that of carbon black.
❸ Pesticide carrier
High adsorption prolongs the efficacy of the medicine and reduces the loss rate.
❹ Feed additives
Anti-caking agent, enhancing feed fluidity (EU EFSA certified).
