Specifications Index Industrial grade Main contents(as h3po4 .Co(nh2 )2 ) %98.00 Phosphorus pentoxide(as p2o 5 ) %44.00 Nitrogen(as n) %17.00 Ph 1.6-2.4 Moisture % 0.20 Heavy metals(as pb) % Arsenic(as as) % Fluoride(as f) % Water insoluble % 25kg/50kg pp bag