Is E400 halal or haram?
Alginic acid · Thickener
E400 (Alginic acid) is generally classified as halal. Seaweed-derived.
What is E400?
E400, listed on labels as Alginic acid, is a thickener that gives products a richer, more viscous texture. You'll most often find it in packaged and processed foods.
Is E400 halal? The verdict
Good news — you can treat E400 as halal. Seaweed-derived. The additive itself needs no special certification. Keep in mind the finished product can still contain other ingredients that aren't halal, so always read the full list.
How to check E400 on a label
If you see E400 (or "Alginic acid") in an ingredient list, no further checking is needed for this additive — focus your attention on meat, animal fats, gelatin and flavourings instead.
Other names & label terms to scan for
Alginic acidE400
Bottom line
E400 is halal. Safe to consume as far as this additive is concerned.
Stop guessing in the aisle
Halal Food AI flags E400 and every other suspect or not-halal additive automatically — just scan the barcode or snap the ingredient list. Plain-language verdicts, 25+ languages.