Бромид натрия: свойства и применение

Inorganic salt: NaBr
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| Name = Sodium bromide
| ImageFile = Sodium bromide 3D ionic. png
| ImageSize = 150px
| ImageName = 3D model of sodium bromide
| ImageFile1 = Sodium bromide. jpg
| ImageSize1 = 200px
| ImageName1 = Sodium bromide powder
| IUPACName = Sodium bromide
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| Section4 = Chembox Structure
| CrystalStruct = Cubic
| LattConst a = 5.97 Å

Sodium bromide is the most useful inorganic bromide in industry.

Also known as Sedoneural, sodium bromide has been used as a hypnotic, anticonvulsant, and sedative in medicine, widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries. Its action is due to the bromide ion, and for this reason potassium bromide is equally effective. In 1975, bromides were removed from drugs in the U. S. such as Bromo Seltzer due to toxicity.

Sodium bromide is used in conjunction with chlorine as a disinfectant for hot tubs and swimming pools.

Because of its high solubility in water (943.2 g/L or 9.16 mol/L, at 25 °C) sodium bromide is used to prepare dense drilling fluids used in oil wells to compensate a possible overpressure arising in the fluid column and to counteract the associated trend to blow out. The presence of the sodium cation also causes the bentonite added to the drilling fluid to swell, while the high ionic strength induces bentonite flocculation.

NaBr has a very low toxicity with an oral estimated at 3.5 g/kg for rats. However, this is a single dose value. Bromide ion is a cumulative toxin with a relatively long half life (in excess of a week in humans): see potassium bromide.