Sodium Tripplyphosphate Technical Grade( STPP) Assay Na5P3O10 :94% min Phosphrous pentoxide(P2O5): 57%min Water Insoluble: 0.1% max Whiteness: 90% max Fe: 0.01% max Packing in 25kgs pp woven bags Qty: 23~25mts/1*20ft FCL