Beryllium bromide

Beryllium bromide
IUPAC name

Beryllium bromide
Identifiers
CAS number 7787-46-4 N
PubChem 82230
ChemSpider 74208 Y
Jmol-3D images Image 1
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, 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

Safety

Beryllium compounds are toxic if inhaled or ingested.

References

  1. ^ a b c Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, pp. 61–62, ISBN 0-8493-8671-3, http://books.google.com/?id=0fT4wfhF1AsC&pg=PA61&dq=%22beryllium+bromide%22+properties, retrieved 2007-12-10 
  2. ^ a b Parsons, Charles Lathrop (1909), written at Easton, Pa., The Chemistry and Literature of Beryllium, Chemical Publishing, pp. 21–22, http://books.google.com/?id=7MxAAAAAIAAJ&pg=PA21&dq=%22beryllium+bromide%22, retrieved 2007-12-10