Phosphoric acid: Phosphoric acid is a chemical compound with the formula H3PO4. It is a trifunctional oxoacid (triacid) important in inorganic chemistry and fundamental in biochemistry. It is a mineral acid obtained by treating phosphate rock or by burning phosphorus.
At room temperature, phosphoric acid is a crystalline solid with a specific gravity of 1,83, which melts at 42,35°C. It is the basic raw material for the production of phosphates (or phosphate salts).
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