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E353AcidulantLow concern
Metatartaric Acid
In plain words
The short version
A polymerized form of tartaric acid — added to wine to prevent cold-temperature tartrate crystallization.
Why it's green
It's widely considered safe at the amounts used in food, so we mark it green. The Safety section below has the details.
Safety profile
ADI not specified — treated like tartaric acid in metabolism (hydrolyzes during digestion). Same negligible toxicity profile.
The detail
Educational information only. Not medical or dietary advice.