Sodium Tripolyphosphate (STPP)

Product Description

Application: Water softener Tanning agent for leather making Auxiliary for dyeing Paper production Foodstuff industry Specification: Indexes: Industrial Grade, Food Grade Na5P3O10%; 94.0, 94.0 P2O5%; 57.0, 57.0 Water Insoluble Matter%; 0.15, 0.04 Iron(Fe) %; 0.015, 0.006 pH value (1% water solution)9.2-10.0, 9.5-10.0 Heavy Metal (as Pb) %; - 0.001 Arsenic (As) %; - 0.0003 Fluoride (F) %; - 0.003 Whiteness %a Y 92, 92 Density (g/cm3) 0.35-0.9, 0.35-0.9 Phase I 10-30, 10-30 Surface density: 0.35-0.9g/cm3