Features: 1) KH2PO4,content,%: ≥ 98.50 2) P2O5,%: ≥ 523) K2O,%: ≥ 34 4) H2O, %: ≤ 1 5) Chloride(Cl), %: ≤ 1 6) Iron(Fe),ppm: ≤ 50 7) As, ppm: ≤ 10 8) Heavy metals (as Pb ),ppm: ≤ 10 9) Cd, ppm: ≤ 1 10) Cr, ppm: ≤ 1 11) Water- insoluble matter %: ≤ 0.20 12) PH: 4.3 - 4.7Usage: Used as fertilizer, germ-cultural agent, yeast-cultural agent, food seasoning,also as medical nutriment and acidifier of urine.Package, transportation and storage 1) 25kg/bag (polyethylene inner bag contained in white plastic knitted bag)1000 kg/bag (polyethylene inner bag contained in white plastic knitted bag) 2) Not a hazardous substance; can be shipped as regular product 3) Store in dry place