Ammonium dihydrogen phosphate (ADP), also known as monoammonium phosphate (MAP), NH4H2PO4, is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acidic.
A 2125 Ammonium dihydrogenphosphate, 99% - used in fertilizer, baking powder and yeast production. It is also employed as an agent to control pH of a solution and in corrosion inhibition.