Feature Products

STPP (Sodium Tripolyphosphate)

Other name:STPP

Quality standard:FCC IV

CAS NO.:7758-29-4

HS CODE:2835311000


Specification:Food grade and Technical grade

Appearance:white powder


Sodium tripolyphosphate (STP, sometimes STPP or sodium triphosphate or TPP) is an inorganic compound with formula Na5P3O10. Sodium triphosphate is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid.Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions.

STPP content     ≥% 95
P2O5 content     ≥ % 57
Water insoluble  ≤ % 0.1
PH ( 1%) 9.5-10.0
Whiteness       ≥ % 85
Fluoride (as F)    ppm 30 max
Arsenic (as As)    ppm 3 max
Heavy Metal(as Pb) ppm 10 max
Chloride (as Cl)  ≤ % 0.025
Sulfate (as SO42-) ≤ %              0.4
Apparent density 0.70-0.85g/cm3          

Usage:Sodium Tripolyphosphate STPP can be used to preserve foods such as red meats, poultry, and seafood, helping them to retain their tenderness and moisture. Pet food and animal feed have been known to be treated with sodium triphosphate, serving the same general purpose as it does in human food.

Packing:25kg per kraft or woven bag, 1x20fcl=23mt or 20mt with pallets.

Shelf life:2years

Storage:Store in a cool, dry, ventilated environment. 

Advantage on this item:BRC certificate factory.

Packing photos: