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Zinc bromide
Bromid zinečnatý.PNG
IUPAC name Zinc bromide
Other names Zinc(II) bromide,
Zinc dibromide
CAS number 7699-45-8
PubChem 24375
RTECS number ZH1150000
Molecular formula ZnBr2
Molar mass 225.198 g/mol
Appearance white crystalline powder
Density 4.20 g/cm3 (20 °C)
4.22 g/cm3 (25 °C)
Melting point

394 °C, 667 K, 741 °F

Boiling point

697 °C, 970 K, 1287 °F

Solubility in water 311 g/100 mL (0 °C)
447 g/100 mL (20 °C)
538 g/100 mL (100 °C)
Solubility very soluble in alcohol, ether, acetone, tetrahydrofuran
Refractive index (nD) 1.5452
NFPA 704

NFPA 704.svg

Flash point Non-flammable
Related compounds
Other anions Zinc fluoride,
Zinc chloride,
Zinc iodide
Other cations Cadmium bromide,
Mercury(II) bromide,
Calcium bromide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Zinc bromide is a chemical compound. Its chemical formula is ZnBr2. It contains zinc and bromide ions.


Zinc bromide is a colorless solid. It dissolves in water. It makes an acidic solution.


It can be made by reacting barium bromide with zinc sulfate. This forms barium sulfate which can be filtered out. It can also be made by reacting zinc with bromine. It can also be made by reacting zinc with hydrogen bromide or hydrobromic acid.


It can be used in organic chemistry. It can be used as a shield against radiation. There is a battery that uses zinc bromide.

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