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Physical & Chemical properties

Water solubility

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Description of key information

HBr is very soluble in water, with solutions of HBr in water forming hydrobromic acid which dissociates to ions (H+and Br-). It
forms an azeotropic mixture in water of 47.63% with boiling point of 124.3 at 760 mm Hg. A saturated solution is 66.5% at 25ºC.

Key value for chemical safety assessment

Water solubility:
665 g/L
at the temperature of:
25 °C

Additional information

Garlanda, T., and Basilico, S. (1993) report HBr as very soluble in water, forming an azeotropic mixture in water of 47.63 % with boiling point of 124.3 ºC at 101323 Pa (760 mm Hg). A saturated solution occurs at 66.5 % at 25 ºC.