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Not to be confused with phosphate soda or phosphonate. A phosphate (PO3â. 4) is an inorganic chemical and a salt of phosphoric acid. In organic chemistry, a phosphate, or organophosphate, is an ester of phosphoric acid. Of the various phosphoric acids and phosphates, organic phosphates are important in biochemistry and biogeochemistry (ecology), and inorganic phosphates are mined to obtain phosphorus for use in agriculture and industry.
It is a major constituent of the molecule phosphate, which is instrumental in the storage of energy as adenosine triphosphate (ATP) molecules. Phosphorus is an essential compound of RNA and DNA, and is a part of the molecular structure of phospholipids, the key components in the structure of cell membranes.he energy released from the high energy phosphate bond of ATP is essential for the operation of the sodium/potassium pump, which exchanges three sodium ions for two potassium ions across a biological membrane.