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E949Glazing agentLow concern
Hydrogen
In plain words
The short version
A packaging gas used in modified-atmosphere applications; niche in food.
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
No ADI specified; not metabolized at the trace levels involved.
The detail
Educational information only. Not medical or dietary advice.