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High purity, synthetic, hydrophilic amorphous silica. Used as a thickening and thixotropic agent.
Details
Common names
Pyrogenic Silica - Fumed Silica
Applications
Industry
Producer
Supplier
Chemical Composition
Fumed silica
Advantages
- Can be wetted by water
Other Applications
coatings and paints
adhesives
printing inks
cosmetics
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Appearance Properties | |||
| Sieve residue | 0.04 | acc. to Mocker > 40 μm | |
| Refractive index | 1.46 | ||
| Physical Properties | |||
| Density | 2.2 | g/ml | |
| Surface Area | 170 - 230 | m²/g | |
| SiO2 | >99.8 | % | |
| pH | 3.8 - 4.3 | ||
| Thermal Properties | |||
| Loss on ignition | <2 | % | |
| Chemical Properties | |||
| Loss on drying | <1.5 | % | (2 h at 105°C) |
| Dispersibility | |||
| Electrical Properties | |||
| Electrical Resistivity | <10^13 | ohm-cm | |
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