STPP Tech Grade 94%min
Appearance: White Powder
Na5P3O10: 94.0%Min
P2 O 5: 57.0%Min
Water Insoluble Matter: 0.10%Max
Iron(Fe): 0.007%Max
PH value (1% water solution): 9.2-10.0
Whiteness :88%Min
Ignition: loss 1.0
density (g/cm3): 0.65-0.99
Phase I: 10-30