Sodium Tripolyphosphate (Stpp)

We are offering our customers a wide range of Sodium Tripolyphosphate (STPP), which are available following Specifications :- CAS No: 7758-29-4 Molecular Formula: Na5P3O10 Molecular Weight: 367.86 Melting Point: 622a H.S. CODE: 2835319000(Industry Grade) H.S. CODE: 2835311000(Food Grade) Appearance: White or colorless crystal powder. 1. Sodium Tripolyphosphate (Industrial Grade) 1) Na5P3O10: 94.0%Min 2) P2O5: 57.0%Min 3) Water Insoluble Matter: 0.15%Max 4) Iron (Fe): 0.012%Max 5) PH Value (1% water solution): 9.1-10.0 6) Whiteness: 92%Min 7) Ignition Loss: 1.0 8) Density (g/cm3): 0.35-0.9 9) Phase I: 10-30 2.Sodium Tripolyphosphate(Food Grade) 1) Na5P3O10: 94.0%Min 2) P2O5: 57.0%Min 3) Water Insoluble Matter: 0.04%Max 4) Iron(Fe): 0.006%Max 5) PH Value(1% water solution): 9.5-10.0 6)Heavy Metal(as Pb): 0.001%Max 7)Arsenic(As): 0.0003%Max 8)Fluoride(F): 0.003%Max 9) Whiteness: 95%Min 10) Density (g/cm3): 0.35-0.9 11) Phase I: 10-30 3. Sodium Tripolyphosphate(Ceramics Grade) 1) Na5P3O10: 96.52%Min 2) P2O5: 57.85%Min 3) Water Insoluble: 0.10%Max 4) Fe: 0.007%Max 5) PH: 9.7