Chemical formula NH4H2PO4; molecular weight 115.03; standard GB/T 10205-2009; appearance powder; net weight 50 kg, total nutrients (N+P2O5) ≥55.0%. Powdered monoammonium phosphate is a water-soluble quick-acting compound fertiliser suitable for various crops and soils, and the principal base material for NPK compound and bulk-blended (BB) fertilisers.