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E 556Acidity Regulators & Anti-caking Agents

Calcium aluminium silicate

Characteristics

Additive NameCalcium aluminium silicate
E No.E 556
TypeIndividual Substance
In plain language

A synthetic anti-caking agent that keeps powdered and granulated foods from clumping together. It's authorised in very limited use — only in one food category, typically table salt. The aluminium content draws some attention, but at permitted levels in food, regulatory bodies like EFSA consider it safe for general consumption.

Source

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E 556 - Calcium aluminium silicate | E-Number Information