Read More Diammonium phosphate (DAP) Supplier in Thane, Pune, nagpur, Nashik, Midc, Maharashtra Diammonium phosphate (DAP) (substance recipe (NH4)2HPO4, IUPAC name diammonium hydrogen phosphate) is one of a progression of water-dissolvable ammonium phosphate salts that can be created when alkali responds with phosphoric corrosive.