Molecular formula: (nh4)2hpo4 molecular weight: 132. 0 standard executed: q/74465717-9. 1-2005(technical grade) q/74465717-9. 2-2005(food grade) cas number: 7783-28-0 properties: white granular crystal, relative density at 1. 619 g/cm3, melting point at 155 ℃ , easily soluble in water, insoluble in alcohol, ph value of 1% solution is 8. 0 uses: as a fire-prevention agent for fabric, timber and paper. For food grade it is mainly used as a fermentation agent, nourishment, and so on. Used as a high effective non-chloride n, p compound fertilizer in agriculture. It contains totally 74% fertilizer elements, used as a basic raw material for n, p and k compound fertilizer. packing and storage: in 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place.