STPP, Sodium Tripolyphosphate good quality, widely used in detergent, good performence STPP Sodium ... Na5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0.05PH Value(1%Solution)9.5-10.0Iron (Fe), %, Max.0.015Fluoride (F), %, Max ... as dispersant, solvent in metal industry and pharmaceutical industry, also widely used in gum synthesis, foodstuff industry, and poultry process. STPP sodium tripolyphosphate