SILSEP fumed silica is added to paints and coatings for rheological control — preventing sedimentation and pigment delamination, improving weathering and scratch resistance, and strengthening the bond between coating and substrate. White powder, 10 kg paper bag.
All grades: white powder · whiteness 98 · SiO₂ (dry basis) ≥99.9%.
| Grade | Heating loss % | Ignition loss % | DBP ml/100g | pH (5% susp.) | BET m²/g | Particle size μm | Bulk density g/L |
|---|---|---|---|---|---|---|---|
| VS150 | 0.5-1.0 | 1.0-2.0 | – | 3.5-4.5 | 150±15 | 14-20 | 40-50 |
| VS200 | 0.5-1.0 | 1.0-2.0 | – | 3.5-4.5 | 200±25 | 14-20 | 40-50 |
| VS300 | ≤1.5 | ≤2.0 | – | 3.5-4.5 | 300±25 | 14-20 | – |
| VS380 | ≤1.5 | ≤2.5 | ≥180 | 3.5-5.5 | 380±30 | 14-20 | – |
Send us your application details and we will match the right grade, share the technical data sheet and arrange samples. Reply within one business day.