Chemical formula: NH４H２PO４ Molecular weight: 115 Standard executed: Q/70894764 01-1998 Properties: White granular crystal; relative density at 1.803, melting point at 190℃, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH value of 1% solution is 4.5. Technical specifications: No Specifications Industrial Grade Food Grade 1 Main contents%≥ 99.0 99.0 2 Phosphorus pentoxide%≥ 61.0 61.0 3 Nitrogen, as N %≥ 11.8 11.8 4 PH value (1% solution) 4.4-4.8 4.4-4.8 5 Moisture%≤ 0.2 0.2 6 Heavy metal, as Pb%≤ 0.001 7 Arsenic, as As%≤ 0.0003 8 Fluoride as F%≤ 0.005 9 Water insoluble %≤ 0.10 0.10 Application: As a fire-prevention agent for fabric, timber and paper, as well as a fire-prevention coating, and dry powder for fire extinguisher. 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. Its total nourishment (N=P2O5) is at 73%, and may be used as a basic raw material for N, P and K compound fertilizer. Packaging: Plastic-woven sack, net weight at 25kg, 50kg or 1,000kg. Store at a ventilated, dry place.