Appearance | Fine, dry powder, usually white or off-white with a crystalline texture |
Color | White, Off-white, Light Gray, Clear |
Particle Size | 10 - 200 microns (depending on grade) |
Moisture Content | ≤ 1% |
Bulk Density | 1.5 - 2.0 g/cm³ |
Specific Gravity | 2.65 - 2.75 g/cm³ |
Refractive Index | 1.54 - 1.55 |
Hardness (Mohs Scale) | 7 |
Chemical Composition | 99% SiO2, trace amounts of Al2O3, Fe2O3, CaO, Na2O |
pH Value | 6 - 7 (slightly acidic to neutral) |