General-Purpose Rubber Reinforcement & Filler Silica with 11–18 µm Particle Size and DBP 230–260
SI-60 is a fine-particle precipitated silica with an average particle size of 11–18 µm. It offers excellent dispersibility and reinforcement performance, and is widely used in shoe soles, industrial rubber, silicone rubber, adhesives, and sealants. Its high DBP oil absorption (230–260 ml/100g) also makes it suitable for thickening and thixotropy applications.
Key Features
- 🧱 Synthetic Amorphous SiO₂ — Pure white amorphous powder produced by reacting soluble silicate with acid
- 🧪 High-Purity Management — SiO₂ ≥ 98–99%, with strict control of harmful components such as heavy metals, lead, and arsenic
- ⚙️ Porous Structure — High specific surface area and oil absorption deliver reinforcement, thickening, matting, and adsorption performance
- 🌿 Wide Applications — Applied across industries: rubber, paint, plastics, food/pharma, toothpaste, cosmetics, and more
Technical Specifications
| Item | Value |
|---|---|
| Form | White powder |
| Whiteness | 97 – 98 |
| SiO₂ (Dry Basis) | ≥ 99% |
| pH | 6.5 – 7.5 |
| DBP Oil Absorption | 230 – 260 ml/100g |
| Particle Size | 11 – 18 µm |
| Bulk Density | 110 – 130 g/L |
| Loss on Drying (105℃, 2 hr) | 4.0 – 6.0 % |
| Ignition Loss (1000℃, 2 hr) | 3.0 – 5.0 % |
| Soluble Salts (Na₂SO₄) | ≤ 1.5 % |
| Lead Content (Pb) | ≤ 0.0005 % |
| Heavy Metals | ≤ 0.003 % |
| Arsenic Content (As) | ≤ 0.0003 % |
| Package | 15 kg / bag |
| Country of Origin | China |
Main Applications
Precipitated Silica
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.