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Nourishment for Life

Free UK food and nutrition tools

21 Jun 2026

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E404 - Calcium alginate

No documented concerns flagged

E404 is approved for use in the UK and is not on our curated risk list. Absence of a flag here is not the same as a guarantee of safety, just an absence of red flags from regulators (EFSA, FSA, IARC) and the peer-reviewed literature we monitor.

At a glance

E number	E404
Class	Carrier, Humectant, Sequestrant, Stabiliser, Thickener
Vegan	yes

What it is and how it is used

Carrier, Humectant, Sequestrant, Stabiliser, Thickener. Used as a food additive.

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