phosphoric acid

Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a mineral (inorganic) acid having the chemical formula H3PO4. Alternatively, orthophosphoric acid molecules can combine with themselves to form a variety of compounds referred to as phosphoric acids in a more general way. The term "phosphoric acid" can also refer to a chemical or reagent consisting of phosphoric acids, usually mostly orthophosphoric acid.
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Noun
1. an acid used in fertilizers and soaps: H3PO4
(synonym) orthophosphoric acid
(hypernym) oxyacid, oxygen acid

chemical formula H3PO4, phosphoric acid a relatively strong acid primarily used as part of aluminum etches and to remove silicon nitride. Phosphoric acid is commonly sold as a 85% solution and has a density of 1.70Kg/L. Phosphoric acid burns on contact with skin or eyes and the vapors will irritate or burn eyes or lungs.

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