Sodium Tripolyphosphate (STPP) - Sodium Tripolyphosphate (STPP)

Sodium Tripolyphosphate (STPP)
CAS No: 7758-29-4
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
Melting Point:622℃
Apearance:White or colorless crystal powder.
1. Sodium Tripolyphosphate(Industrial Grade)
Na5P3O10 94.0%Min
P2O5 :57.0%Min
Water Insoluble Matter 0.15%Max
Iron (Fe) 0.012%Max
PH Value (1% water solution) 9.1-10.0
Whiteness 90%Min
Ignition Loss 1.0
Density (g/cm3) 0.35-0.9
Phase I 10-30
2.Sodium Tripolyphosphate(Food Grade)
Na5P3O10 94.0%Min
P2O5 57.0%Min
Water Insoluble Matter 0.04%Max
Iron (Fe) 0.006%Max
PH Value (1% water solution) 9.5-10.0
Heavy Metal(as Pb) 0.001%Max
Arsenic(As) 0.0003%Max
Fluoride(F) 0.003%Max
Whiteness 95%Min
Density (g/cm3) 0.35-0.9
Phase I 10-30
3. Sodium Tripolyphosphate(Ceramics Grade)
Na5P3O10 96.52%Min
P2O5 57.85%Min
Water Insoluble 0.10%Max
Fe 0.007%Max
PH 9.7
Usage:
Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production.
Packing:20/25Kg wowen plastic bag,21ton/20FCL.
Storge:Keep in dry and windy conditions.
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