Sodium Tripolyphosphate85%,94%,96% 1.white granule or powder 2.certification:ISO 9001;2000 3.best seller and excellent price 4.usage:Household cleaning,builder,etc 5.specification: GB9983-2004 Inspection ItemsStandardInspection resultNa5P3O10,%94.0 min94.6P2O5,%57.0 min.57.1Fe,%0.007 max0.005insoluble matter,%0.1 max.0.08As,%0.0003 max0.0003PH (in 1% aqueous solution)9.2-10.09.8Whiteness,%90 min92