Beryllium bromide

Beryllium bromide
IUPAC name Beryllium bromide
Identifiers
CAS number	7787-46-4 N
PubChem	82230
ChemSpider	74208 Y
Jmol-3D images	{{#if:[Be+2].[Br-].[Br-]|Image 1
SMILES [Be+2].[Br-].[Br-]
InChI InChI=1S/Be.2BrH/h;2*1H/q+2;;/p-2 Y Key: PBKYCFJFZMEFRS-UHFFFAOYSA-L Y InChI=1/Be.2BrH/h;2*1H/q+2;;/p-2 Key: PBKYCFJFZMEFRS-NUQVWONBAJ
Properties
Molecular formula	BeBr2
Molar mass	168.820 g/mol
Appearance	colorless white crystals
Density	3.465 g/cm3 (20 °C)
Melting point	508°C (473°C sublimes)
Boiling point	520°C[1]
Solubility in water	Highly[1]
Solubility in ethanol	Soluble[2]
Structure
Crystal structure	Orthorhombic
Thermochemistry
Std enthalpy of formation ΔfHo298	-2.094 kJ/g
Standard molar entropy So298	9.5395 J/K
Specific heat capacity, C	0.4111 J/g K
Hazards
Main hazards	see Berylliosis
Related compounds
Other anions	Beryllium fluoride Beryllium chloride Beryllium iodide
Other cations	Magnesium bromide Calcium bromide Strontium bromide Barium bromide Radium bromide
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox 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 reacting beryllium oxide with hydrobromic acid (in aqueous solution) or hydrogen bromide (in the gas phase)

^[2]

BeO + 2 HBr → BeBr₂ + H₂O

It hydrolizes slowly in water: BeBr₂ + 2 H₂O → 2 HBr + Be(OH)₂

Safety

Beryllium compounds are toxic if inhaled or ingested.

References

1. ↑ 1.0 1.1 1.2 Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, pp. 61–62, ISBN 0-8493-8671-3, retrieved 2007-12-10 
2. ↑ 2.0 2.1 Parsons, Charles Lathrop (1909), The Chemistry and Literature of Beryllium, Easton, Pa.: Chemical Publishing, pp. 21–22, retrieved 2007-12-10