Specifications:Index Food Grade Main contentNa5P3O10 95.0% Min Phosphorus Pentoxide ( P2O5 ) 57.0% Min Water insoluble 0.05% Max SO4 0.4% Max Chlorides, as Cl 0.025% Max Arsenic, as As 0.0003% Max Heavy Mentals, as Pb 0.001% Max Fluoride, as F 0.003% Max PH of 1% solution 9.5-10.0 Whiteness 85% MinFCL loads: 21MT PER 20FCL Packing: 25KG PP/PE Bag