Comparing E452II - Potassium polyphosphate vs E452IV - Calcium polyphosphate

Overview

E452II - Potassium polyphosphate

Potassium polyphosphate (E452ii) is a group of potassium salts made from chains of phosphate units. Food makers use it to keep foods moist, smooth, and stable, and to stop minerals from causing haze or off-flavors. It is also called potassium metaphosphate or potassium polymetaphosphate.

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E452IV - Calcium polyphosphate

Calcium polyphosphate (E452iv) is a family of calcium salts made from chains of phosphate units. Food makers use it to hold moisture, help oil and water mix, and keep texture steady in many processed foods. It also goes by calcium metaphosphate.

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Synonyms
E452ii
Potassium polyphosphate
Potassium metaphosphate
Potassium polymetaphosphate
E452iv
Calcium polyphosphate
Calcium metaphosphate
Functions
emulsifieremulsifying saltsequestrantstabilizerthickener
emulsifying salthumectantsequestrantstabilizerthickener
Origins
Synthetic
Mineral
Synthetic
Products

Found in 16 products

Found in 1 products

Search rank & volume
#51030 / mo🇺🇸U.S.
#54710 / mo🇺🇸U.S.
Awareness score

×0.45
under-aware

×1.08
normal

Search volume over time

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Popular questions

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  1. How does polyphosphate remove calcium?

    It acts as a sequestrant: the polyphosphate chain binds Ca2+ at multiple oxygen sites to form soluble complexes, preventing calcium from precipitating or causing scale/texture issues. Over time, hydrolysis to orthophosphate can convert some bound calcium into insoluble calcium phosphate, effectively removing it from solution.

  2. What is the e number of calcium polyphosphate?

    E452iv.

  3. When calcium ions complex with sodium metaphosphate, a solid calcium phosphate precipitate forms?

    Not initially—calcium typically remains in soluble complexes with sodium metaphosphate (a polyphosphate). Precipitation of calcium phosphate generally occurs after the polyphosphate hydrolyzes to orthophosphate or under conditions (e.g., high pH/aging) that drive conversion.

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