... .STPP 2,Manufacturer of Sodium Tripolyphosphate 3,Free sample 4,High quality and competitive price STPP, Sodium Tripolyphosphate You are worth ... every penny of it.STPP Sodium TripolyphosphateNa5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0.05PH Value(1%Solution)9. ... SO4), %, Max.0.4Bulk density, g/l650-990White degree %,Min.93Phase I10-30Used as main auxiliary of synthetic wash, soap ...