Difference Between Aluminum Hydroxide And Alumina

Aluminum hydroxide is made of bauxite, processed by a special process to obtain raw materials, and then calcined to obtain alumina. Therefore, the raw materials for this measurement are the same, and they are different links in the same production process, so what are the differences between the two? Let's follow the steps of the editor to see.

Below we mainly understand their differences from two aspects: physical properties and chemical properties:

1. Physical properties: Alumina is a white, water-insoluble solid with a high melting point. Aluminum hydroxide is a white colloidal substance, insoluble in water, and has strong adsorption, which can absorb suspended solids and various pigments in water.

2. Chemical properties: Alumina is a typical amphoteric oxide, which does not react with water, and can react with acids and alkalis; aluminum hydroxide is chemically unstable, easily decomposed when heated, insoluble in weak acids and weak bases, but soluble in weak acids and bases. In strong acids and strong bases, this is often used to identify Al(OH)3.

3. Uses: Alumina is mainly used for high temperature refractories, etc.; and aluminum hydroxide has a good effect in various fuel industries and medicine.