... .size:1-4mm, 90% 5.Pb:50ppm 1Chemical Name: Trisodium Phosphate,Sodium Phosphate,Tribasic,Trisodium Orthophate 2M. F. :Na3PO43M. W. :163.944Physical ... basic liquid.5Quality standard: FCC-IV Name of indexFCC-IVTrisodium Phosphate Na3PO4 (on dried material) ≥% 97.0Water Insoluble ≤%0.2Arsenic (As ... , it should be stored separstely from poisonous Substances. Triple super phosphate TSP