Aluminium hydroxide

<p>Aluminium hydroxide, <a href="/facts/Aluminium/7wmR8jYE">Al</a>(<a href="/facts/Hydroxide/zW0wxpWD">OH</a>)3, is found in as the mineral <a href="/facts/Gibbsite/MdBYjXPW">gibbsite</a> (also known as hydrargillite) and its three much rarer <a href="/facts/Polymorphism_(materials_science)/bu2tqsB9">polymorphs</a>: <a href="/facts/Bayerite/MdBYjXPW">bayerite</a>, <a href="/facts/Doyleite/205P83M0">doyleite</a>, and nordstrandite. Aluminium hydroxide is <a href="/facts/Amphoterism/2UrXEsyl">amphoteric</a>, i.e., it has both <a href="/facts/Base_(chemistry)/M9wA7qeM">basic</a> and <a href="/facts/Acid_(chemistry)/FySU18n1">acidic</a> properties. Closely are <a href="/facts/Aluminium_oxide_hydroxide/0uHVtuwt">aluminium oxide hydroxide</a>, AlO(OH), and <a href="/facts/Aluminium_oxide/wXM9P6pI">aluminium oxide</a> or alumina (Al2O3), the latter of which is also amphoteric. These compounds together are the major components of the aluminium <a href="/facts/Ore/kgc9DssX">ore</a> <a href="/facts/Bauxite/CJ10QPc6">bauxite</a>. Aluminium hydroxide also forms a gelatinous precipitate in water.
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Aluminium hydroxide open-in-new

Aluminium hydroxide