Aluminium Hydroxide Uses

Aluminum hydroxide is a chemical compound with the formula Al(OH)3. It is a white, powdery substance that has several uses in various industries and applications.

1. Antacid: One of the most common uses of aluminum hydroxide is as an antacid. It is used to relieve heartburn, acid indigestion, and stomach upset by neutralizing excess stomach acid. Aluminum hydroxide works by reacting with stomach acid to form aluminum chloride, which then binds with bicarbonate ions to form water and carbon dioxide gas.

2. Water purification: Aluminum hydroxide is also used in water treatment plants to purify water. It helps to remove impurities such as suspended solids, organic matter, and microorganisms from water by coagulating them into larger particles that can be easily filtered out.

3. Flame retardant: Aluminum hydroxide is added to plastics and other materials to make them flame retardant. The compound releases water vapor when exposed to high temperatures, which helps to cool the material and prevent it from catching fire.

4. Ceramic industry: In the ceramic industry, aluminum hydroxide is used as a filler material to increase the strength and durability of ceramics. It is also used as a glaze ingredient in porcelain production.

5. Cosmetics: Aluminum hydroxide is used in cosmetics as a thickening agent, absorbent, and opacifying agent. It is commonly used in deodorants, antiperspirants, and sunscreens.

6. Pharmaceuticals: Aluminum hydroxide is used in the production of some vaccines as an adjuvant. It helps to enhance the immune response to the vaccine by triggering the activation of immune cells.

Overall, aluminum hydroxide has many important uses across a range of industries and applications, making it a valuable and versatile chemical compound.