Chemical Tips Sharing – Sodium Bromide

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Chemical formula: NaBr. Ionic compounds, white crystals, particles, or powder. Odorless, salty in taste, slightly bitter. Density is 3.203 g·cm-3. Melting point: 747°C, boiling point: 1,390°C. It easily absorbs moisture in the air and clumps together, but it does not deliquesce. The dihydrate salt NaBr·2H2O is a colorless monoclinic crystal that loses water at 51°C. Soluble in water, slightly soluble in ethanol. In aqueous solution, bromide ions are easily oxidized by strong oxidizing agents such as fluorine and chlorine, resulting in the release of elemental bromine. Sodium bromide is an analytical reagent used for the trace analysis of cadmium; it is employed as a brominating agent in the inorganic and organic synthesis industries; in medicine, it serves as a sedative and diuretic; it is also used in the production of silver bromide photographic film. Industrially, sodium bromide can be produced by passing bromine through a mixed solution of soda ash and urea: