Evonik Sipernat D17 is a hydrophobic precipitated silica imported from Germany, produced by Evonik. It is specially designed for moisture-sensitive powders, silicone rubber and defoamer systems, with excellent hydrophobicity, anti-caking and reinforcement properties, greatly improving powder flowability and storage stability.
Strong hydrophobicity & moisture-proof - Hydrophobic surface, effectively resist moisture, suitable for moisture-sensitive powders
Excellent anti-caking performance - Greatly improve powder flowability, extend shelf life, optimize processing
High-efficiency silicone rubber reinforcement - Active filler in HTV/RTV/LSR, improve mechanical strength
Stable defoaming & antifoaming - Fast bubble breaking, suitable for various industrial defoamers
High purity & chemical inertness - 98% SiO₂, good compatibility, no negative effect on formulation
Moisture-sensitive chemical powders - Anti-caking & flow aid, improve storage & processing
HTV/RTV/LSR silicone rubber - Active reinforcing filler, enhance strength, wear & resilience
Industrial defoamer formulations - Fast defoaming for coatings, textiles, fermentation, cleaning
Fire-fighting powders & special powders - Anti-caking, improve flowability, ensure performance
Plastic powders & foundry masking powders - Suitable for CPE and resin casting processes
| Brand | Sipernat (Evonik Germany) |
| Product Type | Hydrophobic Precipitated Silica |
| Appearance | White Powder |
| Specific Surface Area (N₂) | 100 m²/g |
| Average Particle Size D50 | 10 μm |
| Tapped Density | 150 g/L |
| Loss on Drying | 4.0 wt% |
| Loss on Ignition | 7.0 wt% |
| pH Value | 8.0 |
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