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Beryllium bromide

Beryllium bromide

General
Systematic name	Beryllium bromide
Molecular formula	BeBr₂
Molar mass	168.820 g/mol
Appearance	colorless white crystals
CAS number	[7787-46-4]
Properties
Density and phase	3.465 g/cm³, solid
Solubility	Very soluble in water^[1] Soluble in ethanol^[2]
Melting point	508°C 473°C (sublimes)
Boiling point	520°C^[1]
Structure
Crystal structure	Orthorhombic
Hazards
Main hazards	see Berylliosis
NFPA 704
R/S statement	R: ? S: ?
RTECS number	?
Related compounds
Other anions	Beryllium fluoride Beryllium chloride Beryllium iodide
Other cations	Magnesium bromide Calcium bromide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Beryllium bromide is the chemical compound with the formula BeBr₂. It is very hygroscopic and dissolves well in water.

Reactions

Beryllium bromide can be prepared by reacting beryllium metal with elemental bromine at temperatures of 500°C to 700°C^[1]:

Be + Br₂ → BeBr₂

Beryllium bromide is also formed when beryllium oxide with hydrobromic acid (in aqueous solution) or hydrogen bromide (in the gas phase) ^[2]:

BeO + 2 HBr → BeBr₂ + H₂O

^ ^a ^b ^c Perry, Dale L. & Phillips, Sidney L., , CRC Press, pp. 61-62, ISBN 0849386713, . Retrieved on 2007-12-10
^ ^a ^b Parsons, Charles Lathrop, written at Easton, Pa., , Chemical Publishing, pp. 21-22, . Retrieved on 2007-12-10