• Jason.Huang@shouyaotrading.com


What Is Sodium Tripolyphosphate? Use In Dog Food

What Is Sodium Tripolyphosphate? Use In Dog Food

Sodium triphosphate (STP), is also famous as sodium tripolyphosphate (STPP), or tripolyphosphate (TPP), is an inorganic compound with the chemical formula Na5P3O10. The manufacturers produce it on a large scale as a component of several domestic and industrial products, especially high-quality detergents. It is the sodium salt of the phosphate Penta-anion, is the conjugate ignoble of triphosphoric acid.  Environmental hitches related to eutrophication are official for their widespread use. People can easily find sodium tripolyphosphate suppliers nearly.

The Preparation And Its Properties

The manufacturers can produce sodium tripolyphosphate by heating a stoichiometric mixture of disodium phosphate, the chemical symbol is Na2HPO4, and monosodium phosphate, its chemical symbol is NaH2PO4, under wisely controlled conditions.

The reaction:

2 Na2HPO4 + NaH2PO4 → Na5P3O10 + 2 H2O

In this method, the sodium tripolyphosphate suppliers get approximately 2 million tons annually.

STPP, sodium tripolyphosphate, is a colorless salt, which occurs both in anhydrous form, like the hexahydrate. Sodium tripolyphosphate manufacturers describe the anion as the pentatonic chain [O3POP(O)2OPO3]5−. Several related di-, tri-, and polyphosphates are famous, including the cyclic triphosphate; symbolized as P3O93−. It binds intensely to metal cations like a bidentate and tridentate chelating agent.


Sodium tripolyphosphate uses in numerous applications:


The majority of STPP, sodium tripolyphosphate, is obsessive as a component of viable detergents. It attends as a “builder,” industrial jargon for a water softener. The hard water comprises high concentrations of Mg2+ and Ca2+. However, the hard water deactivates detergents. As a highly-charged chelating agent, TPP5− drags to dications tightly and avoids them from meddling with the sulfonate detergent.


sodium tripolyphosphate is a preservative for seafood, poultry, meats, and animal feeds. STPP is common in food production like E number E451. In foods, the food manufacturers use STPP as an emulsifier and to keep moisture. Several governments control the quantities allowed in foods; it can substantially upturn the sale of seafood weight in particular. in the U.S. the Food and Drug Administration lists sodium tripolyphosphate as Generally Recognized As Safe (GRAS).

Sodium Tripolyphosphate is one of the standard food additives and components in most countries, as a professional Sodium Tripolyphosphate supplier and manufacturer. Foodchem International Corporation is supplying and exporting Sodium Tripolyphosphate from China for more than 15 years.


Other uses hundreds or thousands of tons per year include ceramics reducing glazes’ viscosity up to a specific limit and leather tanning as a masking agent and synthetic tanning agent. Moreover, anticaking agents, setting retarders, textiles, flame retardants, paper, anticorrosion pigments, rubber manufacture, fermentation, antifreeze are some more uses of Sodium Tripolyphosphate. People also use TPP as a polyanion crosslinker in polysaccharide-created drug delivery.

Sodium Tripolyphosphate In Dog Food

Dog food manufacturers added Sodium Tripolyphosphate to dog foods as a preservative, and to help sticky foods retain moisture; they look fresher for longer.

Although people recognized STPP generally as safe, the U.S. National Institute listed it for Occupational Safety and Health as a possible neurotoxin. Moreover, people widely identified it as a mild skin irritant. Therefore, the manufacturers recommend steering clear foods containing Sodium Tripolyphosphate, especially if your dog is prone to skin problems.



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