flour-treatment

Potassium bromate

Score

A dough conditioner classified by IARC as possibly carcinogenic to humans and banned in the EU, UK and Canada.

Potassium bromate strengthens dough and speeds rising. It is supposed to break down fully during baking, but residue survives in under-baked or over-formulated products. Banned across the EU, UK and Canada; California requires a Proposition 65 cancer warning. Still legal in the United States.

carcinogen suspectedbanned eubanned canada

Also appears on labels as

bromated flour · e924

What this is based on

GrubFacts research
GrubFacts ingredient scoring methodology
GrubFacts · 2026