Fertilizer production In the fertilizer production (DAP,NP,NPK) process, the basic reactions take place between ammonia and acids. In this process, liquid ammonia is used between +4 and +10 °C. In addition, phosphoric acid, which has a density of approximately 1.65 g/cm³ and contains 50-52% P2O5 and 4-5% H2SO4, is also…