Zn3PO42

Zinc phosphate, with the chemical formula Zn3(PO4)2, is an inorganic compound. It is a white, crystalline solid that is generally insoluble in water. Zinc phosphate exists in several hydrated forms, with the dihydrate, Zn3(PO4)2·2H2O, being a common one. It is a salt formed from the reaction of zinc ions and phosphate ions.

Industrially, zinc phosphate finds significant application as a corrosion inhibitor. When applied to metal surfaces, it forms a protective layer that prevents rust and degradation. This property makes it a valuable component in paints, primers, and coatings used in automotive, aerospace, and construction industries. Additionally, it can be used as a pigment, providing opacity and contributing to the color of certain materials. In dentistry, zinc phosphate cement is employed as a luting agent for crowns and bridges, and as a base under fillings due to its biocompatibility and mechanical strength. Its precise applications and properties can vary depending on its purity, crystal structure, and hydration state.