Monosodium Phosphate (E339I): What It Is and Is It Safe?
The mono-acidic sodium salt of phosphoric acid (NaH₂PO₄). Used to adjust pH in processed foods and as a buffering agent. Like all added phosphates, high cumulative dietary phosphate from processed foods is linked to kidney strain and cardiovascular risk, particularly in people with pre-existing kidney conditions. Healthy individuals metabolise normal food-level exposure without issue.
- Category
- Acidity Regulator / Stabiliser
- Typically used in
- Processed cheese, canned evaporated milk, cereals, meat products
- Regulatory status
- Approved EU/USA/UK. Caution for those with kidney conditions.
- Also listed as
- Sodium Dihydrogen Phosphate
- Concerns flagged
-
Cardiovascular concernKidney effects
Scrannr flags Monosodium Phosphate automatically when you scan a barcode.
Where this comes from
- EFSA (2019) — Re-evaluation of phosphoric acid-phosphates – di-, tri- and polyphosphates (E 338–341, E 343, E 450–452) as food additives https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2019.5674
Products containing Monosodium Phosphate
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