What are salts of phosphoric acids called?

Salts of phosphoric acid are referred to as phosphates. Phosphoric acid, also known as H₃PO₄, can lose one or more hydrogen ions to form different kinds of salts, depending on how many hydrogen ions are replaced. When one hydrogen ion is replaced, the resulting salt is a dihydrogen phosphate, and when all three hydrogen ions are replaced, it forms a phosphate ion (PO₄³⁻). Phosphates are widely used in fertilizers, cleaning agents, and various chemical processes.

The other terms such as phosphites and phosphonates refer to different chemical species related to phosphorus but do not denote salts derived directly from phosphoric acid. Phosgene is an entirely different compound used primarily in organic chemistry and is not related to phosphoric acid at all. Thus, phosphates is the appropriate term to describe the salts produced from phosphoric acid.