Antioxidant

Is E319 (TBHQ) halal?

Uncertain The source can vary. This one needs checking before you trust it.

E319 is uncertain. TBHQ itself is a synthetic antioxidant made from petroleum-derived chemicals, with no animal source. Our reference table marks it uncertain for a processing reason, and that is not something a label shows.

Also known as / other names

TBHQtert-butylhydroquinonetertiary butylhydroquinoneE 319antioxidant E319

Last reviewed 2026-10-24.

What E319 (TBHQ) actually is

E319 is TBHQ, an antioxidant that stops oils and fats going rancid. It is mostly found in frying oils, fried snacks and some instant noodles.

The substance is made by chemical synthesis from petroleum-derived starting materials. It is added in very small amounts.

Why it is still uncertain

The question is not the molecule. Our table marks E319 uncertain on processing grounds: how it was made and what it was handled with before it reached the food is not stated on the pack.

We would rather show that as uncertain than move it to halal just because the base chemical is synthetic. A guess that is right most of the time is still a guess.

How to check it yourself

  • A halal certificate on the product means the additives, including E319, have been checked.
  • If you can, ask the manufacturer how their TBHQ is supplied and processed.

Where you'll run into it

Frying oils and shortening, crisps and fried snacks, instant noodles, some crackers and biscuits.

Common questions

Does E319 come from animals?

No. TBHQ is synthetic. The uncertain mark is about processing, not about an animal source.

Sources

Best-effort guidance compiled from sourced references — not a religious ruling and not a certification. Schools of thought differ, and manufacturers change formulations without notice. Please verify with the producer or your local authority when it matters. How we decide a verdict.

One ingredient down.

E319 (TBHQ) is one line on the label. A typical label lists thirty more. Point the camera and the app checks every one of them in about three seconds — free, no account, and it works offline in the aisle where the signal doesn't.