STPP (Sodium Tripolyphosphate)
Guaranteed Technical Specifications:
AssayNa5P3O10 min 95.0%;
P2O5 min 57.0%;
Water Insoluble Matter max 0.05%;
Iron(Fe) max 0.01%;
PH value(1%water solution) 9.5-10.0;
Heavy Metal (as Pb) max 0.001%;
Arsenic (As)max 0.0003%;
Fluoride (F) max 0.003%;
Whiteness min 90.0%.