Potassium bromate

Also known as: bromated flour, KBrO3, E924

Varies by useunder our published method

Varies by use. The concern our method flags differs by product type and market — see the per-use verdicts below.

By NordicScan Evidence Engine · generated from structured evidence records · source spans verified by automated gates · Reviewed 2026-07-08 · Evidence snapshot geo-wave1-evidence-snapshot-2026-07-08 · Scoring engine det_v3 · how we score.

What it is

Potassium bromate is an oxidizing flour improver associated with bromated flour and some bakery-product standards.

Why people ask

People ask because US federal and California state food-market positions now point in different directions.

What our method flags — by use

Food · US federal

In US federal bakery standards, our method rates potassium bromate as moderate-concern because it remains a named optional dough improver under a quantitative limit.

The US listed by 21 CFR 136.110 potassium bromate as an optional ingredient in bread, rolls, and buns within a 0.0075-part-per-100-parts flour limit.

Authority / source	Finding (our paraphrase)	Evidence tier	Date	Link
eCFR / US FDA	The US listed by 21 CFR 136.110 potassium bromate as an optional ingredient in bread, rolls, and buns within a 0.0075-part-per-100-parts flour limit.	authority_regulatory	2026-07-02	source

Evidence coverage for this use: Limited (computed from source count × authority tier × recency; signals depth, does not change the concern band).

Food · California state

In California food-market scope, our method rates potassium bromate as higher-concern because state law names it in a 2027 market restriction.

California restricted by Health and Safety Code section 109025 food products containing potassium bromate from manufacture, sale, delivery, distribution, holding, or offer for sale in commerce beginning January 1, 2027.

Authority / source	Finding (our paraphrase)	Evidence tier	Date	Link
California Legislature	California restricted by Health and Safety Code section 109025 food products containing potassium bromate from manufacture, sale, delivery, distribution, holding, or offer for sale in commerce beginning January 1, 2027.	authority_regulatory	2023-10-07	source

Evidence coverage for this use: Limited (computed from source count × authority tier × recency; signals depth, does not change the concern band).

How this moves a product’s score

On a product score, potassium bromate contributes a moderate concern signal in US federal bakery-standard scope and a higher concern signal for California state-market scope from 2027.

Nordic Scan provides ingredient information and a concern score under our published method, for general consumer research. It is not medical advice and not a medical device, and does not diagnose, treat, cure, or prevent any disease, or determine the safety of any product. Decide for yourself.

This is what Potassium bromate is. What’s in the products you buy? Scan a label and see the concern signals our method flags. Get the app.

Reviewed 2026-07-08 · Evidence snapshot geo-wave1-evidence-snapshot-2026-07-08 · Scoring engine det_v3 · Sources checked 2026-07-08 · See how we score.