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Potassium bromate

Description References
Potassium bromate
Potassium bromate
Chemical Name:
Potassium bromate
eecno.e924;POTASSIUM BROMATE;potassium bronlate;Potassiumbromate,99%;POTASSIUM BROMATE PURE;POTASSIUM BROMATE, ACS;Potassium bromate, p.a.;Potassium bromate, 99.5%;POTASSIUM BROMATE-BROMIDE;Bromicacid potassium salt
Molecular Formula:
Formula Weight:
MOL File:

Potassium bromate Properties

Melting point:
350 °C
storage temp. 
Store below +30°C.
H2O: 0.1 M at 20 °C, clear, colorless
Specific Gravity
5.0-9.0 (25℃, 50mg/mL in H2O)
Water Solubility 
70 g/L (20 ºC)
Stability Strong oxidizer - contact with combustible materials may cause fire. Incompatible with combustible material, organics, reducing agents, aluminium, finely powdered metals.
CAS DataBase Reference
7758-01-2(CAS DataBase Reference)
EPA Substance Registry System
Bromic acid, potassium salt(7758-01-2)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
HazardClass  5.1
PackingGroup  II
HS Code  28299000
Hazardous Substances Data 7758-01-2(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 157 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H271 May cause fire or explosion; strong oxidiser Oxidising liquids;Oxidising solids Category 1 Danger P210, P220, P221, P280, P283,P306+P360, P371+P380+P375,P370+P378, P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
Precautionary statements:
P201 Obtain special instructions before use.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P220 Keep/Store away from clothing/…/combustible materials.
P221 Take any precaution to avoid mixing with combustibles/…
P283 Wear fire/flame resistant/retardant clothing.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P306+P360 IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P371+P380+P375 in case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
P405 Store locked up.

Potassium bromate price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 309087 Potassium bromate ACS reagent, ≥99.8% 7758-01-2 5g $29.7 2018-11-13 Buy
Sigma-Aldrich 309087 Potassium bromate ACS reagent, ≥99.8% 7758-01-2 100g $65.9 2018-11-13 Buy
Alfa Aesar 040013 Potassium bromate, ACS, 99.8% min 7758-01-2 100g $42.4 2018-11-16 Buy
Alfa Aesar 040013 Potassium bromate, ACS, 99.8% min 7758-01-2 500g $90.2 2018-11-16 Buy
Sigma-Aldrich 1.04912 Potassium bromate for analysis (max 0,000001% Hg) EMSURE ACS,ISO,Reag. Ph Eur 7758-01-2 1049120250 $105 2018-11-23 Buy

Potassium bromate Chemical Properties,Uses,Production


Potassium bromate is the potassium salt of bromate. It is typically used in the United States as a flour improver. It acts to strengthen the dough and to allow higher rising. Potassium bromate (KBrO3) is an oxidizing agent that has been used as a food additive, mainly in the bread-making process. However, it has been realized that it is a potential carcinogenic agent. The agent is carcinogenic in rats and nephrotoxic in both man and experimental animals when given orally. It has been demonstrated that KBrO3 induces renal cell tumors, mesotheliomas of the peritoneum, and follicular cell tumors of the thyroid. In addition, experiments aimed at elucidating the mode of carcinogenic action have revealed that KBrO3 is a complete carcinogen, possessing both initiating and promoting activities for rat renal tumorigenesis.


[1]Ekop, A. S., I. B. Obot, and E. N. Ikpatt. "Anti-Nutritional Factors and Potassium Bromate Content in Bread and Flour Samples in Uyo Metropolis, Nigeria." Journal of Chemistry 5.4(2008):736-741.
[2]Kurokawa, Y, et al. "Carcinogenicity of potassium bromate administered orally to F344 rats. " Journal of the National Cancer Institute 71.5(1983):965-72.
[3]Kurokawa, Y, et al. "Toxicity and carcinogenicity of potassium bromate--a new renal carcinogen. " Environmental Health Perspectives 87.1(1990):309.

Chemical Properties

Potassium bromate is a white crystalline solid.

Chemical Properties

white crystals, granules or powder


It is used in oxidizing agent in acid solutions.


Potassium Bromate is a dough conditioner that exists as white crystals or powder and is soluble in water. it exists in the anhydrous form as white granular powder and in the hydrated form as small white crystals or granules. it is used to age and improve the baking properties of flour. it is used with potassium iodate and azodicarbon- amide to modify the protein in bread flour to promote the desired properties of loaf volume and shape. it is used in baked goods.


Bread- and flour-improving agent; in analytical chemistry.

General Description

A white crystalline solid.

Air & Water Reactions

Water soluble.

Reactivity Profile

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]. Prolonged exposure to fire or heat can result in an explosion .


Dangerous fire risk in contact with organic materials, strong irritant. Possible carcinogen.

Health Hazard

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

Safety Profile

Confirmed carcinogen with experimental carcinogenic data. A poison by ingestion. A powerful oxidzer. An irritant to skin, eyes, and mucous membranes. Mutation data reported. Wxtures with sulfur may ignite. Violent reaction with Al, Al + dmitrotoluene @ 290°, As, C, Cu, Pb(C2H3O2)2, metal sulfides, organic matter, P, S. Aqueous solutions react violently with selenium. When heated to decomposition it emits very toxic fumes of Brand K2O. See also BROMIDES.

Potential Exposure

Potassium bromate is used as animal feed additive, food additive; flavor and packaging material; as a laboratory reagent; an oxidizing agent.

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Speed in removing material from skin is of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.


UN1479 Potassium bromate, Hazard Class: 5.1; Labels: 5.1-Oxidizer.

Purification Methods

Crystallise KBrO3 from distilled H2O (2mL/g) between 100o and 0o. To remove bromide contamination, a 5% solution in distilled H2O, cooled to 10o, is bubbled with gaseous chlorine for 2hours, then filtered and extracted with reagent grade CCl4 until colourless and odourless. After evaporating the aqueous phase to about half its volume, it is cooled again slowly to about 10o. The crystalline KBrO3 that separates, is washed with 95% EtOH and dried in a vacuum [Boyd et al. J Am Chem Soc 74 237 1952]. Another way to remove Br-ions is by stirring several times in MeOH and then drying at 150o [Field & Boyd J Phys Chem 89 3767 1985].


A strong oxidizer.Violent reaction with many compounds, including reducing agents; chemically active metals; combustible materials, strong acids, alkaline earth sulfides, aluminum carbides, aluminum, amines, calcium sulfide, carbides, chlorine trifluoride, glycerin, hydrides, hydrochloric acid, hydrogen peroxide, hydrogen sulfide, hydroxylamine, magnesium, metal powders, metal sulfides, molybdenum, phenylhydrazine, phosphorous red/ friction, phosphorous trichloride, silicon, sulfides, sulfur, sulfur dioxide, sulfur/friction, sulfuric acid, tungsten, hydrogen trisulfide. Incompatible with aluminum, copper.

Potassium bromate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium bromate Suppliers

Global( 154)Suppliers
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Shanghai Time Chemicals CO., Ltd.
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Mainchem Co., Ltd.
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Weifang Kaihong Chemical Limited 86-536-8865335,13953637678
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J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
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Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40395 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44187 61
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
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JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
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Shanghai Hanhong Scientific Co.,Ltd. 021-54306202,021-54308259
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Potassium bromate Spectrum

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