Grade standard: industrial grade; agricultural grade
Appearance: white crystal
Solubility: water soluble
N: 12%min P2O5: 61%min
PH value(1% water solution):4.4-4.6
Moisture: 0.5%max
Water insoluble: 0.1%max
Heavy metal (as Pb): 0.001%max
Arsenic (as As): 0.0003%max
Fluoride (as F): 0.005%max