FSA-150 is a hydrophilic fumed silica rheology control additive with a relatively low specific surface area, offering good dispersibility and moderate rheological efficiency. It is universally applicable across a wide range of coating systems and provides reliable anti-settling, anti-sagging, and corrosion resistance while maintaining smooth processing characteristics.
| Properties | Unit | FSA-150 |
| SiO2 content (dry basis) | wt.% | ≥ 99.8 |
| Loss on drying | wt.% | ≤ 1.5 |
| pH (4% suspension) | - | 3.7-4.5 |
| Specific surface area (BET) | m²/g | 135-165 |
| Tamped density | g/l | Approx. 50 |
| Surface treatment | - | Hydrophilic (untreated) |
FSA-150 is particularly well suited for:
Leather coatings requiring smooth application and stable viscosity
General industrial coatings with balanced rheological needs
Wood coatings emphasizing easy processing and surface quality
Sealants requiring easy dispersion and moderate structure build
RTV-1K silicone sealants for processing-friendly rheology control
Silicone rubber (HTV) for reinforcement/rheology control
