ALUMINIUM OXIDE

Aluminum Oxide (Al₂O₃) is an inorganic chemical compound that is the most common naturally occurring substance. It is an amphoteric compound. It has its other name as alumina, alundum, and aloxide. Its natural occurrence is in a crystalline form called corundum. It is also found naturally as Ruby’s, Sapphire, and emeralds. Aluminum Oxide has extensive uses in the industry and commercial side.

CAS NO :- 1344-28-1

USES AND APPLICATIONS FOR ALUMINIUM OXIDE

It operates as a chemical reagent in several chemical reactions: –

• It is used as decorative coatings and for corrosion protection.
• It is used in sunscreen as a common ingredient and other cosmetics like blush, nail paints and lipstick.
• It is used in water purification treatment.
• It works as a catalyst to speed up the chemical reaction.
• It serves as an abrasive and is used in sandpaper.
• It is a ceramic oxide that is used in many catalysts and absorbents.
• It is utilized in the formulation of glass.

PREPARATION

It is produced by the calcination of Gibbsite. It can be obtained if the leaching of bauxite with the caustic soda, followed by the precipitation by the hydrolysis and seeding of the solution.

CHEMICAL PROPERTIES

• It reacts with acids and bases both as an amphoteric substance.
• It is very stable substance.
• It has a refractive index of 1.758
• It is not corrosive but does corrode.
• Its vapor pressure is 00mmHg.
• It is not flammable or combustible.