Sodium bromide

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Sodium bromide

Sodium bromide (NaBr) is a white salt used in bromate hydrolysis. It is also a good precursor for making bromine.

CAS number : 7646-15-6, 13466-08-5 (dihydrate)


Physical properties

Molecular weight : 102.89 g/mol
Melting point : 747 °C (1,377 °F)
Boiling point : 1,390 °C (2,530 °F)
Density : 3.21 g/cm3 (2.18 g/cm3 dihydrate)
Solubility : 94.32 g/100 mL (25 °C), soluble in ammonia, alcohol, insoluble in acetone


Sodium bromide crystallizes as cubic crystals. If a water solution is kept above 50.7 °C the crystals form anhydrous NaBr, below 50.7 °C the dihydrate is formed, NaBr . 2 H2O.


Sodium bromide can be found as a disinfectant used in swimming pools and spas.


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