Knowra Aluminium hydroxide Aluminium hydroxide Aluminium hydroxide, Al(OH)₃, is an inorganic compound that occurs in several mineral forms. It is used in antacids and as an adjuvant in some vaccines.
Amphoterism : The ability of a substance to react both as an acid and as a base. Aluminium hydroxide dissolves in both acidic and strongly alkaline solutions.
Antacid : A substance that neutralizes stomach acid to relieve symptoms such as heartburn. Aluminium hydroxide is a common active ingredient in antacid products.
Bauxite : A heterogeneous sedimentary rock rich in aluminium hydroxide minerals and the chief ore of aluminium. Its gibbsite content makes it a major natural source of aluminium hydroxide.
Calcium carbonate : A calcium salt used in antacids, supplements, and as a building material. Unlike aluminium hydroxide, it neutralizes acid while releasing carbon dioxide.
Brønsted–Lowry acid–base theory : A theory in which acids donate protons and bases accept them. In the stomach, aluminium hydroxide consumes protons as it neutralizes gastric acid.
Magnesium hydroxide : An inorganic base used as an antacid and laxative. It is often combined with aluminium hydroxide to balance antacid effects and bowel side effects.
Boehmite : An aluminium oxyhydroxide mineral with formula AlO(OH), distinct from Al(OH)₃ minerals. Its similar name and composition make it easy to confuse with aluminium hydroxide itself.
Sodium bicarbonate : A soluble sodium salt used as a leavening agent, cleaning product, and antacid. Its rapid, soluble neutralization contrasts with aluminium hydroxide's slower, poorly soluble action.
Aluminium hydroxide gel : A hydrated, poorly crystalline aluminium hydroxide preparation used in medicines and vaccines. Its high surface area and formulation properties matter more than those of bulk mineral crystals.
Vaccine adjuvant : A substance added to a vaccine to strengthen or shape the immune response to its antigen. Aluminium hydroxide is one of the best-established adjuvant materials.
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