EDTA (ethylenediaminetetraacetic acid; food-use salts)

What this is

EDTA is not one food additive everywhere. Codex lists calcium disodium EDTA as INS 385 and disodium EDTA as INS 386, grouped as ethylene diamine tetra acetates with functions such as preservative, sequestrant, antioxidant, and colour-retention agent. In the U.S., the two food-use salts are separately covered under 21 CFR §172.120 and §172.135, with use limited to specified foods and maximum levels. JECFA established an ADI of 0–2.5 mg/kg body weight for calcium disodium EDTA, with the condition that no excess disodium EDTA remain in foods. The main scientific rationale is chelation: EDTA binds metal ions that can speed oxidation or discoloration. The current concern is not a broad ban signal; it is data uncertainty. EFSA launched a 2024 call to support re-evaluation of calcium disodium EDTA (E385), and a mouse-model study has reported gut-inflammation and colon-carcinogenesis signals under inflammatory conditions.

Safety Review

The critical endpoints experts review in safety assessments. This is not a prediction of harm.

JECFA's ADI and older rat feeding data support low-dose permitted uses, but EDTA is being refreshed in EFSA's re-evaluation process, including requests for genotoxicity, impurity, stability, and use-level data. A mouse-model study reported increased colitis and colon carcinogenesis under inflammatory conditions; relevance to typical human food exposure remains uncertain.