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E285PreservativeElevated concern
Sodium Tetraborate (Borax)
In plain words
The short version
A borate salt permitted essentially only to preserve and firm sturgeon caviar; restricted elsewhere.
Why we flag it
It's allowed, but comes with clearer cautions — such as reactions in sensitive people, stricter limits, or contested safety. The Safety section below explains why.
Safety profile
Borates are restricted because they accumulate in the body and can affect fertility and development at higher doses; the caviar use is a narrow low-level exception. Not permitted as a general food additive in most countries.
The detail
Educational information only. Not medical or dietary advice.