E-code guide
E404Calcium Alginate
DoubtfulThickener
E404

Calcium Alginate

Thickener

JAKIM Handbook 2010 classifies as doubtful; SANHA and MUIS classify as halal.
Based on 3 cited authorities. Confidence: medium.

What authorities say

3 authorities on record
1says Doubtful2say Halal

Why this verdict

E404 is calcium alginate, a calcium salt of alginic acid extracted from seaweed, used as a thickener, gelling agent, and stabiliser. SANHA classifies E404 as Halaal. JAKIM Handbook 2010 rules E404 halal only when the calcium is from a mineral source. MUIS lists E404 as halal, noting it is the calcium salt of alginic acid (E400). Because the calcium source is not disclosed on the label, E404 is doubtful by default.

Common questions

Is E404 halal?

Calcium Alginate (E404) is classified doubtful. JAKIM Handbook 2010 classifies it as doubtful; SANHA and MUIS classify it as halal.

What is E404 made from?

Calcium Alginate (E404) is derived from plant sources.

Last reviewed by the HalalHQ research team in June 2026.