Potassium bromate, 99.8%,

Potassium bromate is a bromate of potassium and takes the form of white crystals or powder. Potassium bromate is typically used as a flour improver (E number is E924), strengthening the dough  and allowing higher rising. It is an oxidizing agent, and under the right conditions, will be completely used up in the baking bread. However, if too much is added, or if the bread is not baked long enough or not at a high enough temperature, then a residual amount will remain, which may be harmful if consumed.

Potassium bromate might also be used in the production of malt barley.