Aluminum oxide
ALDRICH/769290 - powder, ultra dry
Synonym: Alumina
CAS Number: 1344-28-1
Empirical Formula (Hill Notation): Al2O3
Molecular Weight: 101.96
EC Number: 215-691-6
MDL Number: MFCD00003424
Linear Formula: Al2O3
Product Type: Chemical
| anion traces | chloride (Cl-): ≤0.015% |
| sulfate (SO42-): ≤0.05% | |
| bulk density | 950‑1100 g/L |
| cation traces | As: ≤0.0005% |
| Fe: ≤0.02% | |
| form | powder |
| greener alternative category | Enabling  |
| greener alternative product characteristics | Design for Energy Efficiency Learn more about the Principles of Green Chemistry . |
| impurities | ≤0.5% substances extractable by water |
| InChI | 1S/2Al.3O |
| InChI key | TWNQGVIAIRXVLR-UHFFFAOYSA |
| loss | ≤1.0% loss on ignition |
| mp | 2040 °C (lit.) |
| particle size | >0.063, coeff var ≥72% |
| >2 mm, coeff var ≤2% | |
| <0.063 mm, coeff var ≤28% | |
| Quality Level | 100 |
| SMILES string | O=[Al]O[Al]=O |
| surface area | 120-190 m2/g |
| sustainability | Greener Alternative Product |
| Application: | Owing to its high hardness, chemical stability and thermal conductivity, alumina finds applications as filler for metals and plastics. It also finds applications in paints, polisher and cosmetics. |
| General description: | We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. Aluminum oxide serves as a multifunctional additive or coating in lithium-ion batteries, helping stabilize electrode–electrolyte interfaces, suppress side reactions, improve thermal stability, and extend cycle life. By enabling safer, longer-lasting cells, it reduces material waste and energy use across the battery lifecycle. Click here  for more information. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | nwg |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 2040 °C (lit.) |
| UNSPSC | 12352311 |