Potassium bromate
7758-01-2 · 0.033M Potassium bromate · 0.033M Potassium Bromate according to European Pharmacopoeia 4.2.2. · BrKO3 · Bromate, potassium · Bromic acid, potassium salt · Bromic acid, potassium salt (1:1) · CCRIS 529 · EEC No. E924 · HSDB 1253 · Kaliumbromat · POTASSIUM BROMATE · Potassium bromate ACS reagent · Potassium bromate(DOT) · Potassium bromate(V) (KBrO3) · potassium bromate-bromide · potassium bromate/potassium bromide · potassium trioxidobromate(1-) · potassium trioxobromate · Reagecon Potassium Bromate 0.01667M according to Chinese Pharmacopoeia (ChP) · Reagecon Potassium Bromate 0.1N according to United States Pharmacopoeia (USP) · E924 · Potassium bromateCAS 7758-01-2
Listed as a raising agent, a flour treatment agent and a dough strengthener by the US.
Listed as raising agents (US) · flour treatment agents (US) · dough strengtheners (US) · oxidising and reducing agents (US)
- United States: Leavening agent — FDA, Substances Added to Food: POTASSIUM BROMATE
- United States: Flour treating agent — FDA, Substances Added to Food: POTASSIUM BROMATE
- United States: Dough strengthener — FDA, Substances Added to Food: POTASSIUM BROMATE
- United States: Oxidizing or reducing agent — FDA, Substances Added to Food: POTASSIUM BROMATE
Potassium bromate is a flour improver that strengthens dough and gives a higher, more even loaf. It is not permitted as a food additive in the European Union, the United Kingdom or Canada.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| Australia and New Zealand | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Canada | No listing matchedHealth Canada’s lists name additives without E or INS numbers, so this site matches them by exact name. A substance listed there under a name this site does not recognise has no row here. | ||
| European Union | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Great Britain | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Japan | Permitted, with conditions | Designated additive: Appended Table 1, item 204, 臭素酸カリウム (“Potassium Bromate” in the unofficial English translation). …Designated additive: Appended Table 1, item 204, 臭素酸カリウム (“Potassium Bromate” in the unofficial English translation). Standards for use — Specifications and Standards for Foods, Food Additives, etc. (MHW Notification No. 370 of 1959), Part II (Food Additives), F (Standards for use), entry 臭素酸カリウム: (1) [may be used only in the foods stated] “臭素酸カリウムは、パン(小麦粉を原料として使用するものに限る。)以外の食品に使用してはならない。” (2) [sets maximum levels of use for the foods stated; must be removed or broken down before the food is finished] “臭素酸カリウムの使用量は、臭素酸として、小麦粉1kgにつき0.030g以下でなければならない。また、使用した臭素酸カリウムについては、最終食品の完成前に分解し、又は除去しなければならない。” The Japanese is the standard as published. There is no official English translation of the Notification; the English in square brackets is this site’s description of what each sentence does, not a translation of the foods or the levels. Compositional specifications for this additive, in the same Notification, are not imported and are not shown here; nor are the general rules in F 添加物一般, which apply to every additive. | Regulations for Enforcement of the Food Sanitation Act (MHW Ordinance No. 23 of 1948), Appended Table 1retrieved 2026-10-18 |
| South Korea | No listing matchedThis site imports Part III of South Korea’s Standards and Specifications for Food Additives, matched by CAS number, then INS number, then exact name. Mixed preparations and sanitisers are not imported, and an entry whose identifiers disagreed with a page’s is held for review, so an empty row does not show that South Korea does not permit the substance. | ||
| United States | Permitted, with conditions | 21 CFR 172.730retrieved 2026-10-17 | |
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
How much is permitted
A listing usually limits the quantity as well as the food. Only one of the forms that takes is a figure: quantum satis and good manufacturing practice permit the amount the technological effect requires and no more, which is a limit rather than the absence of one. Figures below are the range across every food category this page is listed in, and categories differ between regulators — see how much is permitted.
| Japan | — | 1 no quantity stated |
|---|---|---|
| United States | — | 1 no quantity stated |
No regulator sets a figure for Potassium bromate. That is not an absence of control: where the listing says quantum satis or good manufacturing practice, the quantity is limited to what the effect requires.
What it is made from
Produced by electrolysing a potassium bromide solution. It is intended to be fully converted to bromide during baking; the regulatory question concerns what remains when it is not.
- Vegan
- Vegetarian
Compare other additives on the dietary indexes.
- CAS registry number
- 7758-01-2
- InChIKey
- OCATYIAKPYKMPG-UHFFFAOYSA-M
- PubChem
- CID 23673461
Every name it appears under
23 recorded names. A label may use any of them.
E number
- E924
CAS registry number
- 7758-01-2
As it appears in regulation
- Potassium bromate
Other names
- 0.033M Potassium bromate
- 0.033M Potassium Bromate according to European Pharmacopoeia 4.2.2.
- BrKO3
- Bromate, potassium
- Bromic acid, potassium salt
- Bromic acid, potassium salt (1:1)
- CCRIS 529
- EEC No. E924
- HSDB 1253
- Kaliumbromat
- POTASSIUM BROMATE
- Potassium bromate ACS reagent
- Potassium bromate(DOT)
- Potassium bromate(V) (KBrO3)
- potassium bromate-bromide
- potassium bromate/potassium bromide
- potassium trioxidobromate(1-)
- potassium trioxobromate
- Reagecon Potassium Bromate 0.01667M according to Chinese Pharmacopoeia (ChP)
- Reagecon Potassium Bromate 0.1N according to United States Pharmacopoeia (USP)
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.
Common questions
Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.
- What is Potassium bromate?
- Potassium bromate is a flour improver that strengthens dough and gives a higher, more even loaf. It is not permitted as a food additive in the European Union, the United Kingdom or Canada.
- What is Potassium bromate used for in food?
- It is listed as a raising agent, a flour treatment agent and a dough strengthener — the role the US assigns it. This page shows every function each regulator records, with the citation for each.
- Is Potassium bromate banned in Europe?
- No. Potassium bromate does not appear on the EU's list of authorised food additives, which is not the same as being banned: the EU permits an additive only where it has authorised it, and usually the reason for an absence is that no one applied. The EU has made no finding against this substance. It does mean it may not be used as a food additive in the EU today.
- Where is Potassium bromate permitted?
- Of the seven regulators this site reads, Japan and the US permit it. Each permission is for named foods at named levels, not a blanket one; the table on this page gives them with citations.
- Is Potassium bromate vegan?
- Yes. Potassium bromate is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.
Sources for this page
- jp retrieved 2026-10-18
- ecfr retrieved 2026-10-17
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