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Hydrophilic fumed silica. Used in sealants.
Details
CAS
945-52-5 112 ;7631-86-9
Recommended for
Applications
Producer
Supplier
Chemical Composition
Hydrophilic Fumed Silica
Advantages
- small surface area
- Improved reinforcement and thixotropic effect in RTV-silicone rubber
- Particularly suitable for achieving high loading levels or improving extrudability
Other Applications
RTV-1K , -2K, liquid silicone rubber (LSR)
sealants
CMP
Storage
We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances. AEROSIL® 90 should be used within 2 years after production.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Physical Properties | |||
| Tap density | 0.08 | g/cm3 | |
| Particle size | 20 | nm | Average |
| Surface Area | 75 - 105 | m²/g | BET |
| SiO2 | >99 | % | based on ignited material |
| pH | 3.7 - 4.7 | in 4% dispersion | |
| Humidity | <1 | % | |
| Thermal Properties | |||
| Loss on ignition | <1.0 | % | based on material dried for 2 hours at 105°C |
| Chemical Properties | |||
| Loss on drying | <1 | % | 2hours at 105°C |