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STPP (Sodium Tripolyphosphate)
Other name：STPP
Quality standard：FCC IV
CAS NO.：7758-29-4
HS CODE：2835311000
M.F.：Na5P3O10
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.
Specifications：
| Analysis | Specification |
| 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：
