Cerium(III) bromide, with the chemical formula CeBr3, is an inorganic compound composed of the rare-earth metal cerium and the halogen bromine. It is part of a group of compounds known as cerium(III) salts, where cerium is in its +3 oxidation state.

Properties of Cerium(III) Bromide:

• Appearance: Cerium(III) bromide is a white to slightly yellow crystalline solid.
• Solubility: It is soluble in water, and the aqueous solution may be slightly acidic due to hydrolysis.
• Hygroscopic: Like many rare-earth salts, cerium(III) bromide tends to be hygroscopic, meaning it can absorb moisture from the air.

Uses and Applications: Cerium(III) bromide is not as commonly used as some other cerium compounds, but it does have some niche applications in chemistry and materials science. Some of its uses include:

1. Catalyst: Cerium compounds, including cerium(III) bromide, can act as catalysts in various chemical reactions.
2. Cerium-doped scintillators: Cerium(III) bromide can be used as a scintillator, a material that emits light when exposed to ionizing radiation. These scintillators have applications in radiation detectors and other related technologies.
3. Crystal Growth: Cerium(III) bromide is used in the growth of single crystals for research and industrial purposes.

Safety Considerations: As with all chemical compounds containing rare-earth elements, proper handling and safety precautions should be followed when working with cerium(III) bromide. It is essential to consult the Material Safety Data Sheet (MSDS) for specific information on its hazards and safety recommendations.