Sodium Tripolyphosphate STPP

Specifications Sodium Tripolyphosphate used as moisture conservative. Applied to can, fruit drinks, milk products, vegetable protein drinks, in

Sodium tripolyphosphate 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

ITEM	STANDARD
ASSAY (%) (Na5P3O10)	95 MIN
APPEARANCE	WHITE GRANULAR
P2O5 (%)	57.0 MIN
FLUORIDE (PPM)	10MAX
CADMIUM (PPM)	1 MAX
LEAD (PPM)	4 MAX
MERCURY (PPM)	1 MAX
ARSENIC (PPM)	3 MAX
HEAVY MENTAL (AS PB) (PPM)	10 MAX
CHLORIDES (AS CL) (%)	0.025 MAX
SULPHATES (SO42-) (%)	0.4 MAX
SUBSTANCES NOT DISSOLVED IN WATER (%)	0.05 MAX
PH VALUE (%)	9.5 - 10.0
LOSS ON DRYING	0.7% MAX
HEXAHYDRATE	23.5% MAX
WATER-INSOLUBLE SUBSTANCES	0.1% MAX
HIGHER POLYPHOSPHATES	1% MAX

  Details The uses of sodium tripolyphosphate also include using it as a preservative. 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.