E-code guide
E402Potassium Alginate
HalalThickener
E402

Potassium Alginate

Thickener

SANHA, JAKIM Handbook 2010, and MUIS all classify this as halal.
Based on 3 cited authorities. Confidence: medium.

What authorities say

3 authorities on record
3say Halal

Why this verdict

E402 is potassium alginate, the potassium salt of alginic acid from brown seaweed, used as a thickener and stabiliser. SANHA, JAKIM Handbook 2010, and MUIS all classify E402 as halal. MUIS notes it is the potassium salt of alginic acid (E400). E402 is halal.

Common questions

Is E402 halal?

Potassium Alginate (E402) is classified halal. SANHA, JAKIM Handbook 2010, and MUIS classify it as halal.

What is E402 made from?

Potassium Alginate (E402) is derived from plant sources.

Last reviewed by the HalalHQ research team in June 2026.