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E556Anti-caking agentModerate concern
Calcium Aluminium Silicate
In plain words
The short version
A natural aluminosilicate anti-caking agent — used in dry mixes and table salts.
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 0–1 mg/kg body weight (combined aluminium). Soluble aluminium fraction is the regulatory concern; the silicate matrix itself is essentially inert.
The detail
Educational information only. Not medical or dietary advice.