| Appearance | Fine powder |
| Color | White to off-white |
| Odor | Odorless |
| Particle Size | 0.5 - 10 microns |
| Specific Gravity | 2.0 - 2.5 g/cm³ |
| Bulk Density | 0.3 - 0.6 g/cm³ |
| pH | 7.0 - 8.0 |
| Moisture Content | Max. 2.0% |
| Purity | Min. 95% |
| Surface Area | 300 - 500 m²/g |
| Porosity | > 30% |
| Thermal Stability | > 500°C |
| Chemical Composition | Al₂O₃, SiO₂, Na₂O, K₂O, CaO, MgO |