Substance profile
Potassium Bromate
Potassium Bromate is a white hexagonal crystal and is odorless.
01 · Identification
What Potassium Bromate is
Potassium Bromate is a white hexagonal crystal and is odorless. It boils at 370 °C, melts at 434 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · Identifiers
Potassium Bromate identifiers and molecular data
Potassium Bromate CAS number and EC number
Potassium Bromate molecular formula and molecular weight
03 · GHS classification
Potassium Bromate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Potassium Bromate pictograms and signal word
Potassium Bromate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Oxidising liquids or Oxidising solids | Category 1 | H271 | GHS03 |
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Carcinogenicity GHS chapter 3.6 | Category 1A or 1B | H350 | GHS08 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Potassium Bromate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H271 | May cause fire or explosion; strong oxidiser. |
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H301 | Toxic if swallowed. |
This page lists only the codes assigned to Potassium Bromate. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Potassium Bromate
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Potassium Bromate issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Potassium Bromate precautionary statements
CLP Annex VI assigns 8 precautionary statements to Potassium Bromate. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Potassium Bromate name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | калиев бромат |
| Spanish español | Bromato de potasio |
| Czech čeština | bromičnan draselný |
| Danish dansk | kaliumbromat |
| German Deutsch | Kaliumbromat |
| Estonian eesti | kaaliumbromaat |
| Greek ελληνικά | βρωμικό κάλιο |
| English English | potassium bromate |
| French français | bromate de potassium |
| Croatian hrvatski | kalijev bromat |
| Italian italiano | bromato di potassio |
| Latvian latviešu | kālija bromāts |
| Lithuanian lietuvių | kalio bromatas |
| Hungarian magyar | kálium-bromát |
| Maltese Malti | bromat tal-potassju |
| Dutch Nederlands | kaliumbromaat |
| Polish polski | bromian(V) potasu |
| Portuguese português | bromato de potássio |
| Romanian română | bromat de potasiu |
| Slovak slovenčina | bromičnan draselný |
| Slovenian slovenščina | kalijev bromat |
| Finnish suomi | kaliumbromaatti |
| Swedish svenska | kaliumbromat |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Potassium Bromate GHS label elements
Everything CLP Annex VI fixes for Potassium Bromate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Potassium Bromate
- May cause fire or explosion; strong oxidiser.
- May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Toxic if swallowed.
- Obtain special instructions before use.
- Do not eat, drink or smoke when using this product.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF exposed or concerned:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention.
- Rinse mouth.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Potassium Bromate in the GHS label constructor →
07 · Health hazards
Potassium Bromate health hazards and exposure limits
Potassium Bromate carcinogenicity classification
Evaluation: There is inadequate evidence in humans for the carcinogenicity of potassium bromate. There is sufficient evidence in experimental animals for the carcinogenicity of potassium bromate. Overall evaluation: Potassium bromate is possibly carcinogenic to humans (Group 2B).
Source: Hazardous Substances Data Bank (HSDB)
Under the current Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1986), bromate would be classified as B2, probable human carcinogen. Under the Proposed Guidelines for Carcinogen Risk Assessment (U.S. EPA, 1996), bromate should be evaluated as a likely human carcinogen by the oral route of exposure. Insufficient data are available to evaluate the human carcinogenic potential of bromate by the inhalation route. /Based on former classification guidelines/
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
08 · Physical and chemical properties
Potassium Bromate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Potassium Bromate boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 370 °C (698 °F) | decomposes | CAMEO |
Potassium Bromate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 434 °C (813.2 °F) | HSDB | |
| 350 °C (662 °F) | CAMEO |
Potassium Bromate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 3.27 g/cm³ | CAMEO | |
| 3.27 g/cm³ | at 25 °C | DOE PAC |
Potassium Bromate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in 12.5 ppm water, 2 parts boiling water | HSDB | |
| Soluble in boiling water | HSDB | ||
| Insoluble in ethanol | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Potassium Bromate fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Potassium Bromate fire potential
Dangerous fire risk in contact with organic materials.
Source: Hazardous Substances Data Bank (HSDB)
Fire and explosion
It forms very flammable mixtures with combustible materials and this mixture may be explosive if the combustible material is very finely divided. Prolonged exposure to fire or heat by the material can result in an explosion.
Source: HSDB
10 · Handling and storage
Potassium Bromate storage and handling
Potassium Bromate safe storage
Separated from combustible substances, reducing agents, powdered metals and incompatible materials. See Chemical Dangers.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Potassium Bromate storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
Potassium Bromate incompatible materials
Incompatible materials: Strong reducing agents, powdered metals.
Source: Hazardous Substances Data Bank (HSDB)
Potassium Bromate reactivity
POTASSIUM BROMATE is a strong oxidizing agent. Forms very flammable mixtures with combustible materials. Such mixtures may be explosive if the combustible material is finely divided and are often ignitable by friction. A mixture with finely divided aluminum can explode by heat, percussion, and friction [Mellor 2:310. 1946-47]. Reacts explosively with selenium [Mellor 2 Supp1:763. 1956].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Potassium Bromate in the storage compatibility matrix →
11 · Transport
Potassium Bromate UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
Potassium Bromate under UN 1484 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| POTASSIUM BROMATE | 5.1 | O2 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 5.1 is “Oxidizing substances” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Potassium bromate | 5.1 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 5.1 is “Oxidizer” (49 CFR 173.2).
12 · Questions
Potassium Bromate — frequently asked questions
What is the CAS number of Potassium Bromate?
The CAS number of Potassium Bromate is 7758-01-2. Its EC number is 231-829-8.
What does a Potassium Bromate label have to show?
Under CLP Annex VI the label for Potassium Bromate carries the pictograms Flame over circle, Skull and crossbones and Health hazard and the signal word is Danger.
Is Potassium Bromate flammable?
CLP Annex VI assigns Potassium Bromate no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Potassium Bromate a carcinogen?
Yes. CLP Annex VI classifies Potassium Bromate as a category 1A or 1B carcinogen and assigns it H350: may cause cancer. IARC places it in Group 2B: possibly carcinogenic to humans.
What is the boiling point of Potassium Bromate?
The boiling point reported for Potassium Bromate is 370 °C (698 °F), decomposes (CAMEO).
What is the melting point of Potassium Bromate?
The melting point reported for Potassium Bromate is 434 °C (813.2 °F) (HSDB).
How should Potassium Bromate be stored?
Keep container tightly closed in a dry and well-ventilated place. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Potassium Bromate
Keep going: substances starting with P, or search the whole database by name, CAS number, pictogram or signal word.