... softener, detergent, antirust agent, drier, purger, developer and intensifier Trisodium phosphate(TSP) Chemical formula : Na3PO4Standard : HG/T2517-93 Properties : white or ... . Technical index : Index nameIndustrial gradeFood grade Assay (Na3PO4·12H2O) %≥ 98.0 98.0 P2O5 %≥ 18.3 18.3 Sulfate ( as SO4) %≤ 0 ...