CodeE321 · INS 321
TypeAntioxidant
Made fromSynthetic.
Found inoils, crisps, cereals and fatty foods
What is E321?
E321 is BHT, an antioxidant. Synthetic.
Also written as: INS 321, E-321, E 321. INS is the international numbering system used outside Europe, including on labels in Asia, Australia and the Middle East.
What to do
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Frequently asked questions
Is E321 halal?
E321 (BHT) is halal. Synthetic.
What is E321 made from?
Synthetic.
What is E321 used for?
E321 is used as an antioxidant, typically in oils, crisps, cereals and fatty foods.
What should I do if a product contains E321?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Related E-numbers
E300Ascorbic acid (vitamin C)E301Sodium ascorbateE302Calcium ascorbateE304Ascorbyl palmitateE306Tocopherol-rich extract (vitamin E)E307Alpha-tocopherolE320BHAE322Lecithins
Last reviewed 2026-10-06. How we decide · Suggest a correction