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