Barium bromide

Barium bromide is an inorganic compound with the chemical formula BaBr₂. It is a white crystalline solid that is soluble in water and is commonly used in various applications, including in the production of other barium compounds and in the purification of radium.

Structure and Properties

Barium bromide crystallizes in a lead chloride (PbCl₂) structure, which is a typical structure for many barium halides. The compound consists of barium cations (Ba²⁺) and bromide anions (Br⁻) arranged in a lattice structure. The high melting and boiling points of barium bromide are indicative of the strong ionic bonds present in the compound.

Preparation

Barium bromide can be prepared by the direct reaction of barium metal with elemental bromine:

<math>\text{Ba} + \text{Br}_2 \rightarrow \text{BaBr}_2</math>

Alternatively, it can be synthesized by reacting barium carbonate (BaCO₃) with hydrobromic acid (HBr):

<math>\text{BaCO}_3 + 2\text{HBr} \rightarrow \text{BaBr}_2 + \text{CO}_2 + \text{H}_2\text{O}</math>

Applications

Barium bromide is used in the purification of radium by removing impurities. It is also used in the production of other barium compounds and in the manufacturing of photographic chemicals. Additionally, barium bromide has applications in the electronics industry, particularly in the production of certain types of glass.

Safety and Handling

Barium bromide is toxic if ingested and can cause irritation to the skin and eyes. Proper safety precautions should be taken when handling this compound, including the use of gloves and eye protection. In case of contact with skin or eyes, the affected area should be rinsed thoroughly with water.

Also see

• Barium chloride
• Barium sulfate
• Bromine
• Inorganic chemistry