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E284PreservativeModerate concern
Boric Acid
In plain words
The short version
A traditional preservative restricted to caviar in the modern EU food code.
Why we flag it amber
It's permitted and generally considered safe, but there are a few reasons to be mindful — like sensitivities in some people, debated studies, or intake limits. The Safety section below explains the specifics.
Safety profile
ADI of 0–0.16 mg/kg body weight (as boron, JECFA). Accumulates in tissues with chronic exposure; classified as reprotoxic at higher doses. The narrow EU permission reflects the unique storage challenges of caviar combined with very small per-capita consumption.
The detail
Educational information only. Not medical or dietary advice.