Potassium bromate
CAS Number: 7758-01-2
Chemical Formula: BrKO3
Synonyms:
potassium bronlate
Potassium bromate 99.5% for analysis
Potassium bromate solution 1/60 mol/l (0.1 N)
Appearance: White Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Product Details
Potassium bromate CAS#7758-01-2
Potassium bromate is the potassium salt of bromate. It has been widely used in the United States as a flour improver to strengthen dough and boost rising volume. As an oxidizing agent, it serves as a food additive widely applied in bread production. Research has identified it as a potential carcinogen. Oral administration causes carcinogenicity in rats and nephrotoxicity in humans and laboratory animals. Studies confirm KBrO3 induces renal cell tumors, peritoneal mesotheliomas, and thyroid follicular cell tumors. Mechanistic research shows it acts as a complete carcinogen with both initiation and promotion effects on renal tumor formation in rats.
Parameters
| Item | Value |
| Melting point | 350 °C |
| bulk density | 1400kg/m3 |
| density | 3.27 |
| storage temp. | Store below +30°C. |
| solubility | Potassium bromate is highly soluble in water (7.5 g/100 mL at 25°C; 49.8 g/100 mL at 100°C), slightly soluble in ethanol, and almost insoluble in acetone; it is very stable when dissolved in water at room temperature. |
| form | Powder/Solid |
| color | White crystals or granules |
| Specific Gravity | 3.27 |
| PH | 5.0-9.0 (25℃, 50mg/mL in H2O) |
| Water Solubility | 70 g/L (20 ºC) |
| Merck | 14,7617 |
| Stability | Strong oxidizer – contact with combustible materials may cause fire. Incompatible with combustible material, organics, reducing agents, aluminium, finely powdered metals. |
| Cosmetics Ingredients Functions | OXIDISING |
| InChI | 1S/BrHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 |
| InChIKey | OCATYIAKPYKMPG-UHFFFAOYSA-M |
| SMILES | [K+].[O-]Br(=O)=O |
| CAS DataBase Reference | 7758-01-2(CAS DataBase Reference) |
| IARC | 2B (Vol. Sup 7, 73) 1999 |
| EPA Substance Registry System | Potassium bromate (7758-01-2) |
Safety Information
| Item | Value |
| Hazard Codes | O,T |
| Risk Statements | 45-9-25-22 |
| Safety Statements | 53-45 |
| RIDADR | UN 1484 5.1/PG 2 |
| WGK Germany | 3 |
| RTECS | EF8725000 |
| TSCA | TSCA listed |
| HazardClass | 5.1 |
| PackingGroup | II |
| HS Code | 28299000 |
| Storage Class | 5.1A – Strongly oxidizing hazardous materials |
| Hazard Classifications | Acute Tox. 3 Oral; Carc. 1B; Ox. Sol. 1 |
| Hazardous Substances Data | 7758-01-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 157 mg/kg |
Product Application
Potassium bromate (KBrO3) is mainly used as a flour maturing agent and dough conditioner. It is regarded as one of the most effective dough conditioners in baking. Since 1990, scientific evidence has suggested bromate may be carcinogenic. Responding to health risks, the FAO and WHO joint committee removed potassium bromate from the list of authorized flour treatment additives.
For non-food uses, KBrO3 functions as an oxidizing agent, primary standard, and brominating reagent in analytical chemistry. It is also used in hair neutralizers for home perms at 5–25% concentration (pH 4–9), often combined with sodium bromate, sodium perborate, or hydrogen peroxide.
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