Barium dibromide dihydrate

Barium compounds: barium dibromide dihydrate

The barium in barium dibromide dihydrate formally is in the oxidation state 2.

Barium dibromide dihydrate

• Formula as often written: BaBr₂.2H₂O
• Hill system formula: Ba₁Br₂H₄O₂
• CAS registry number: [7791-28-8]
• Formula weight: 333.166
• Class: bromide

Synonyms

• barium dibromide dihydrate
• barium(II) bromide 2-water
• barium bromide 2-water

Physical properties

• Colour: white
• Appearance: crystalline solid
• Melting point: 75°C (decomposes, loses H₂O)
• Boiling point: 120
• Density: 3700 kg m^-3

Suppliers

Coming soon...

Element analysis

Element percentages for the elements in barium dibromide dihydrate

Element	%
Ba	41.22
Br	47.97
H	1.21
O	9.60

Synthesis

Barium bromide is made by the neutralization of barium carbonate with HBr in water. The product crystallizes as the hydrate BaBr₂.2H₂O. If this heated, dehydration to anhydrous BaBr₂ occurs.

BaCO₃ + 2HBr(aq) → BaBr₂(aq)

Isotope pattern

What follows is the calculated isotope pattern for the BaBr₂.2H₂O unit with the most intense ion set to 100%.

Formula: Ba₁Br₂H₄O₂

mass  %
324   0.1 
325   0.0 
326   0.2 
327   0.0 
328   1.8 _
329   4.5 __
330   8.6 ____
331  16.3 ________
332  60.7 ______________________________
333  19.2 __________
334 100.0 __________________________________________________
335   7.4 ____
336  46.5 _______________________
337   0.1 
338   0.2 

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

• R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
• N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
• F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
• A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
• R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
• A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
• A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
• J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
• D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
• J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
• J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

WebElements Shop

WebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.

Barium	Baryum
Barium	Barium
Bario	Bario
Barium	Bário