Potassium Polyphosphate
Also known as: E452ii, Potassium metaphosphate, Potassium polymetaphosphate, E452
EFSA's 2019 re-evaluation of phosphate additives (E338-452) established a group ADI of 40 mg/kg bw/day expressed as phosphorus and concluded that dietary exposure may exceed this in some population groups. High dietary phosphate intake is linked to cardiovascular and renal concerns, especially in chronic kidney disease.
What it is
Potassium polyphosphate — a chain phosphate (linear inorganic polyphosphate) potassium salt; part of E452 polyphosphates group.
Emulsifier, stabilizer, sequestrant, and water-binding/melting salt.
Why it's flagged
- high cumulative phosphate intake
- concern for chronic kidney disease patients
- potential cardiovascular/renal health implications at high intake
What regulators actually say
"EFSA established a group acceptable daily intake (ADI) for phosphates of 40 mg/kg body weight per day, expressed as phosphorus, and noted that dietary exposure to phosphates may exceed this ADI in some population groups."
Regulatory status
United States — FDA
Permitted as direct food additive (21 CFR 182.6285 and 184.1610 for related potassium phosphates)
European Union — EFSA
Authorized (E452); group ADI 40 mg/kg bw/day as P (EFSA 2019)
Scan it before you buy it
Get Ube on iOS or Android — point at any barcode, see what's actually in there.
Get the app