Arsenite
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The arsenite ion is H2AsO3−, or similar.
An arsenite (compound) is a compound that contains this ion.
The arsenite ion may be formed from arsenic trioxide by adding base. Arsenite has a valency of 3 and is also known as trivalent arsenic.
Its white odorless crystals are toxic and slightly soluble in water. It occurs in nature as arsenolite and claudetite and is also a by-product of metal smelting. Its main use is in producing copper chrome arsenate to treat timber. It is also used for arsenic pesticides, glass production, pharmaceuticals and non-ferrous alloys.
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