Aluminum hydroxide

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Aluminium hydroxide is a chemical compound with the formula Al(OH)3. It is an inorganic compound that is commonly used as an antacid to neutralize excess stomach acid, as well as a component in the manufacture of various products, such as ceramics, paper, and cosmetics. It is a white, powdery substance that is insoluble in water and has a low toxicity. When heated, it decomposes to produce aluminium oxide, or alumina, which is used in the production of aluminium metal.

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Aluminium hydroxide has several major or common uses, including:

  1. Antacid: Aluminium hydroxide is commonly used as an antacid to neutralize excess stomach acid and provide relief from heartburn, indigestion, and stomach ulcers.
  2. Water treatment: Aluminium hydroxide is used in water treatment processes to remove impurities and improve the clarity and safety of drinking water.
  3. Flame retardant: Aluminium hydroxide is used as a flame retardant in plastics, rubber, and textiles, as it releases water vapor when heated, which helps to cool and extinguish flames.
  4. Filler: Aluminium hydroxide is used as a filler in a variety of materials, including paper, ceramics, and paint, to improve their properties and performance.
  5. Catalyst: Aluminium hydroxide is used as a catalyst in chemical reactions, particularly in the production of polyolefins, which are used to make a wide range of plastic products.
  6. Pharmaceutical: Aluminium hydroxide is used as an excipient in pharmaceutical formulations, such as vaccines and antacids, to enhance their stability and effectiveness.

Cosmetics: Aluminium hydroxide is used in cosmetics and personal care products, such as deodorants and antiperspirants, as an absorbent and as a thickening agent.