Aluminium Oxide
Alumina, Corundum, Al2O3
- CAS
- 1344-28-1
- EC
- 215-691-6
- Sectors
- Coatings, Adhesives, Sealants & Elastomers, Building & Construction, Aerospace & Defense
Aluminium Oxide (CAS 1344-28-1), also known as alumina, is an inorganic compound of aluminium and oxygen supplied as a white to pink powder for high-strength abrasives, wear-resistant coatings, refractory linings for industrial furnaces, and advanced aerospace ceramics. The calcined alumina grade is utilized for its high dielectric strength and resistance to chemical erosion. It serves as a vital refractory material for lining industrial furnaces and high-temperature reactors. With its high melting point and mechanical durability, it is a key component in advanced aerospace ceramics. It provides superior structural integrity in extreme environmental conditions.
Typical Properties
| Molecular formula | Al2O3 |
|---|---|
| Molecular weight | 101.96 g/mol |
| Appearance | Aluminum is a combustible, light, silverywhite, soft, ductile, malleable, amphoteric metal |
| Form | powder |
| Color | White to pink |
| Odor | Odorless |
| Melting point | ~2000 °C (approx) |
| Boiling point | 2980 °C |
| Density | 4.0 g/cm³ @ Temp: 20 °C |
| Water solubility | INSOLUBLE |
| Flash point | 2980°C |
| pH | 7.0±0.5 ( in H2O) |
| GHS signal word | Danger · Irritant / harmful, Health hazard |
| HS code | 28181010 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Aluminium Oxide
Applications
- Abrasives and Grinding: Used in the manufacture of sandpaper, grinding wheels, and precision polishing compounds.
- Refractory Linings: Essential for manufacturing bricks and castables used in high-temperature industrial kilns.
- Surface Coatings: Applied in CASE industries to provide scratch resistance and thermal insulation to surfaces.
Safety & Risks
Generally non-hazardous, but prolonged inhalation of fine dust can cause respiratory irritation. Use N95 dust masks, safety glasses, and protective gloves during handling.
Packaging
25kg bags, 500kg-1200kg bulk bags, and fiber drums for fine powders.