ALUMINUM OXIDE
CAS: 1344-28-1
Category: Inorganic Chemicals
| Purity | Industrial Grade ≥95%, High-Purity Grade ≥99.5%, Electronic Grade ≥99.99% |
| Molecular Formula | Al2O3 |
| Molecular Weight | 101.96 |
| Appearance | White crystalline powder or granules, odorless, insoluble in water, with high hardness and thermal stability. |
| Packaging | 25 kg kraft paper bags with polyethylene liner, 500 kg or 1000 kg jumbo bags, or customized industrial bulk packaging. |
| Testing Indicators | Appearance — Visual inspection; Particle size distribution — Laser diffraction particle size analyzer; Chemical composition — ICP-OES or XRF analysis; Aluminum oxide content — Gravimetric analysis or XRF; Moisture content — Karl Fischer titration or loss on drying (ASTM D280); Specific surface area — BET nitrogen adsorption method (ASTM C1069); Crystal phase identification — X-ray diffraction (XRD); Trace impurities — ICP-MS/ICP-OES. |
| Storage Notes | Store in a cool, dry, well-ventilated area. Keep containers tightly closed to prevent contamination and moisture absorption. Avoid contact with strong acids, strong alkalis, and reactive chemicals. Store away from excessive humidity to maintain product quality. |
| Lead Time | 10 days |
Aluminum oxide (Alumina) is widely used as an abrasive material, ceramic raw material, catalyst support, refractory material, adsorbent, and filler. High-purity grades are used in electronic ceramics, sapphire production, semiconductor materials, and optical applications. Activated alumina grades are commonly used for drying gases, water purification, and adsorption processes.