Potassium Bromate, Formula, Preparation Method, Chemical Properties

Potassium Bromate

Potassium bromate is an iconic compound and a strong oxidizing agent. It is used to making the bread items. According the food corporation reports the potassium bromate is contained 84% in the bread items. It looks like a white crystalline powder. It is used limited and very harmful to us. This is one of the finest inorganic compound also. The systematic IUPAC name is known as potassium bromate. The chemical or molecular formula of potassium bromate is KBrO3. The other names are potassium salt and bromic acid.

Structural Formula

This is the structural formula of the potassium bromate:

Potassium Bromate

Chemical Formula

The chemical formula of the potassium bromate is KBrO3.

Preparation Method

The preparation of potassium bromate is two ways. One is when the bromine gas is reacted with the potassium hydroxide it produced the potassium hypobromite. These hypobromite is further reacted to the disproportion to get the potassium bromate. The potassium bromide and water is the byproducts.  The chemical is given below as follows.

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3Br2 + 6KOH → KBrO3 + 5KBr + 3H2O

Physical Properties

Melting point 350C
Boiling point 370C
Molecular weight 167.00g/mol
Density 3.27g/cm3
Solubility in water 49.7g/100mL(100C)
Solubility Insoluble in acetone
Crystal structure Hexagonal
Magnetic susceptibility -52.6×10-6cm3/mol
Appearance White crystalline powder


Chemical Properties

When the temperature is increased the solubility in water is also increased. Due to the high melting point it will decomposes at the higher temperature. It is one of the non-inflammable substances. The range of ph level is 5-9 at 25C. it is used to manufacturing the lethal substances. This could be the carcinogenic products.


Potassium bromate is a source of bromine. It is used to prepare the standard solutions that it is stable indefinitely. It is used as an astringent and antiseptic such as toothpaste, mouthwashes and gargles 3 to 5 percent. It is an oxidizing agent for analytic chemistry and also a brominating agent.


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