Potassium Bromate (Bromated Flour) is a bulking agent that helps to strengthen dough reducing the amount of time needed for baking, therefore costing less for the consumer.
Bromated flour is found in rolls, wraps, flatbread, bread crumbs, bagel chips and white bread.
Potassium Bromate is know to cause cancer in animals. Even small amounts in bread can create problems for humans. This bulking agent can also cause kidney and nervous system disorders.
While the FDA has not banned the use of bromated flour, they do urge bakers to voluntarily leave it out.