| Item | Specification |
| SiO2(dry basis)≥% | 98 |
| BET Surface Area m²/g | 125±15 |
| Loss On Heating 105ºC2h% | 6.0~8.0 |
| Lgnition loss at 1000ºC%≤ | 3.0-7.0 |
| PH Value | 6.5~7.5 |
| DBP absorption Value cm³/g | 220±20 |
| Na2SiO4%≤ | 1.0 |
| Fe(mg/kg)≤ | 150 |
| Average Particle Size(D50)μm | 10-13 |
| Sieve residue(45μm)% | 0.5 |
It is mainly used as reinforcing fillers for silicone rubber, tire rubber and other rubber products. It can also be used as a modifier for functional polymer materials such as epoxy resins and polyurethanes, as well as a defoaming agent and opacifier for products like ink, coatings, adhesives and detergents.
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