About Bromide

Bromide refers to compounds containing bromine in oxidation state -1, including hydrogen bromide, ammonium bromide, metal bromides, and non-metal bromides. The properties are between Chloride and Iodide. Bromide ion is the preferred reducing agent. The stability of complex formation is between that of iodine and chlorine. Most are easily soluble in water, but the bromides of copper (I), silver (I), mercury (I) and lead (II) are more difficult to dissolve. Clinically, bromide usually refers to potassium bromide, sodium bromide and ammonium bromide, commonly known as "tribromide", which can strengthen the inhibitory process of the cerebral cortex, and can adjust the balance between excitation and inhibition process, resulting in a sedative effect .

In addition, silver bromide is used in photographic film and photosensitive paper, and copper bromide can be used as a brominating agent in organic synthesis. Metal bromides can be prepared by the direct combination of bromine and metals (such as aluminum bromide) or by the interaction of hydrobromic acid with metal hydroxides (or their salts).

Solubility
Alkali metal, alkaline earth metal bromide and ammonium bromide are easily soluble in water. Poorly soluble bromides are similar to poorly soluble chlorides, but are generally less soluble than the corresponding chlorides. An aqueous solution of hydrogen bromide is called hydrobromic acid, which is a strong acid. Metal bromides can be prepared from the corresponding carbonates or hydroxides with hydrobromic acid. Such as: sodium bromide, manganese bromide, barium bromide, copper bromide, magnesium bromide, thallium bromide, mercury bromide and so on.


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