aluminumhydroxide

Aluminum hydroxide is a chemical compound with the formula Al(OH)3. It is an amphoteric substance, meaning it can react as both an acid and a base. In its natural form, it is found as the mineral gibbsite. Aluminum hydroxide is a white, amorphous or crystalline solid. It is insoluble in water but soluble in strong acids and strong bases.

Industrially, aluminum hydroxide is produced primarily from bauxite ore through the Bayer process. It serves as a key intermediate in the production of aluminum metal. It is also used in the manufacturing of other aluminum compounds.

In medicine, aluminum hydroxide is widely employed as an antacid to neutralize stomach acid and relieve heartburn, indigestion, and upset stomach. It is also used in some medications as a phosphate binder to prevent phosphorus absorption in patients with kidney disease. Due to its astringent properties, it can be found in some antiperspirants and deodorants. Furthermore, it functions as a flame retardant additive in plastics and polymers, releasing water vapor when heated, which cools the material and dilutes flammable gases. It is also used as a pigment and a component in ceramics and glass manufacturing.