Aluminium oxide - is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point.
A 1743 (OTTO) Aluminium oxide, 98% Cas 1344-28-1 - used in a variety of plastics, rubber, ceramics, refractory products for reinforcement toughening. It is also useful to produce artificial ruby, sapphire, yttrium aluminum garnet. It is useful in the field of fiber fabric products and high pressure sodium lamp as far-infrared emission and thermal insulation materials. It is useful for the C single crystal detectors. It plays an important role for the hydrogenation of aromatic hydrocarbons.