Highly Soluble Mono-ammonium phosphate Technical-grade for Soil Improvement in Agriculture Product Description: Industrial-grade monoammonium phosphate, known as ammonium dihydrogen phosphate and abbreviated as TMAP, has a chemical formula NH4H2PO4 and a molecular weight of 115.03. This substance is typically a white powder or granular material, with granular products having high particle compressive strength. It has a melting point of 190, a density of 1.803 at 18, and a