Perbromic acid

The compound perbromic acid is the inorganic compound with the formula HBrO₄. It is an oxoacid of bromine. Perbromic acid is unstable and cannot be formed by displacement of chlorine from perchloric acid, as periodic acid is prepared; it can only be made by protonation of the perbromate ion.

Perbromic acid

Identifiers
CAS Number	19445-25-1
3D model (JSmol)	Interactive image
ChEBI	CHEBI:29245
ChemSpider	167074
PubChem CID	192513
CompTox Dashboard (EPA)	DTXSID70276715
InChI InChI=1S/HBrO4/c2-1(3,4)5/h(H,2,3,4,5) Key: LLYCMZGLHLKPPU-UHFFFAOYSA-N InChI=1/HBrO4/c2-1(3,4)5/h(H,2,3,4,5) Key: LLYCMZGLHLKPPU-UHFFFAOYAZ
SMILES O[Br+3]([O-])([O-])[O-]
Properties
Chemical formula	BrHO4
Molar mass	144.908
Melting point	decomposes before melting, unstable as solid
Conjugate base	Perbromate
Hazards
Main hazards	powerful oxidizer
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Perbromic acid is a strong acid and strongly oxidizing. It is the most unstable of the halogen(VII) oxoacids. It decomposes rapidly on standing to bromic acid and oxygen. It reacts with bases to form perbromate salts.

See also

• Perbromate

Further reading

• Appelman, Evan H. (1969). "Perbromic acid and perbromates: synthesis and some properties". Inorganic Chemistry. 8 (2): 223–227. doi:10.1021/ic50072a008.