Copper bromide (CuBr)(7787-70-4)
Cuprous bromide (CuBr) is an inorganic chemical compound that holds a significant place in the field of chemistry due to its unique properties and widespread applications. This monovalent copper halide exists in the form of white, cubic crystals, exhibiting pure chemical characteristics. However, this beautiful white substance is highly sensitive to environmental conditions and will quickly decompose once exposed to light or moist air, revealing its unstable chemical properties. In terms of chemical structure, the molecular structure of CuBr is similar to that of zinc sulfide, forming a paramagnetic solid structure. This structure endows it with unique performance in certain chemical reactions, making it an important reagent in organic synthesis. CuBr can form stable complexes with various acids such as hydrochloric acid and hydrobromic acid, and react with aqueous ammonia to produce corresponding ammine complexes. These characteristics make it highly adjustable in chemical reactions. In terms of physical properties, the density of CuBr is 4.72 g/cm3, its melting point is 504 °C, and its boiling point is as high as 1345 °C, showing its high melting point and relatively high density. This substance dissolves slowly in water but can be fully dissolved in hydrobromic acid, hydrochloric acid, and ammonium hydroxide, while being insoluble in acetone. These characteristics determine its special requirements for experimental operation and storage, which need to be kept in a cool and dry environment, sealed to prevent decomposition caused by contact with air or water. The CAS number of CuBr is 7787-70-4, and its chemical formula clearly indicates its chemical composition. In addition, it has many alternative names, reflecting different names in different research fields and applications. The vapor pressure of CuBr at 1 mm Hg @ 572 °C indicates its stability in high-temperature environments, but it decomposes when exposed to hot water or strong oxidizing agents such as nitric acid. CuBr, a monovalent copper bromide, is an inorganic salt with high reactivity and unique chemical structure, widely used in organic synthesis and chemical research. Its sensitivity to environmental conditions, good solubility, and paramagnetism make it a unique tool for chemical reactions, and a valuable asset for chemists.
