E452 · Emulsifiers, Humectants, Sequestrants, Stabilisers, Thickeners

Polyphosphates

Moderate risk emulsifiermineral depletionsynthetic

Phosphate additive concern.

Category: Emulsifiers, Humectants, Sequestrants, Stabilisers, Thickeners
Acceptable daily intake: 40 mg/kg body weight/day (EFSA)
Vegan: Yes
Vegetarian: Yes

What it is

E452 (Polyphosphates) belong to the phosphate family of food additives. They are longer-chain versions of triphosphates (E451) and are used for the same purpose: trapping water in processed meats and stabilising ultra-processed cheeses.

How it is used in food

The strongest water-binders of the family, common in frozen seafood glazes and processed cheese.

Commonly found in

Processed meats and sausages
Frozen poultry (injected with water)
Processed cheese and spreadable cheese

Health and safety

Same cumulative-intake caution as the other phosphates.

Phosphates are completely absorbed by the body. While phosphorus is an essential nutrient, excessive intake from processed foods artificially spikes blood phosphorus levels. Over time, this strains the kidneys and triggers the body to pull calcium from bones to maintain mineral balance.

Bone density and kidney strain

people with reduced kidney function; general population at high intakes · evidence: probable

Additive phosphate is absorbed far more completely than the phosphorus bound in food, and high intakes are associated with vascular calcification and bone demineralisation. The evidence is strongest in people with reduced kidney function; in the general population it is observational.

EFSA re-evaluation of phosphates

Additive source of dietary phosphate.

Regulatory status

Region	Status	Notes
Australia & New Zealand FSANZ	Permitted	Permitted under the FSANZ Food Standards Code.
European Union EFSA / European Commission	Permitted	Authorised for food use under EU regulations (Annex II).
United States FDA (Food and Drug Administration)	Permitted	Generally Recognised As Safe (GRAS).

Identification on labels

E-number: E452

Also printed asSodium Polyphosphate

Alternatives to this additive

E331: Sodium citrates — Performs the same buffering and melting job in processed cheese without adding to dietary phosphate load.

How it is made

Manufactured chemically from phosphoric acid (E338) and sodium or potassium carbonates.

Chemical Synthesis — Produced by intense heating of phosphoric acid with sodium or potassium salts to form long polymer chains.

Worth knowing

These are long phosphate chains.

Conclusion

Polyphosphates are a hallmark of highly processed foods. Minimising intake is particularly crucial for anyone with kidney issues, and highly recommended for the general population to protect long-term bone and cardiovascular health.

References

EFSA re-evaluation of phosphates — EFSA

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Entry last reviewed 2026-07-28.

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