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3D model (JSmol)
|Molar mass||g·mol−1 102.894|
|Appearance||White powder, hygroscopic|
|Density||3.21 g/cm3 (anhydrous)|
2.18 g/cm3 (dihydrate)
|Melting point|| 747 °C (1,377 °F; 1,020 K) |
36 °C (97 °F; 309 K)
|Boiling point||1,390 °C (2,530 °F; 1,660 K) |
|71.35 g/100 mL (−20 °C)|
79.52 g/100 mL (0 °C)
94.32 g/100 mL (25 °C)
104.9 g/100 mL (40 °C)
116.2 g/100 mL (100 °C)
|Solubility||Soluble in alcohol, liquid ammonia, pyridine, hydrazine, SO2, amine|
Insoluble in acetone, acetonitrile
|Solubility in methanol||17.3 g/100 g (0 °C)|
16.8 g/100 g (20 °C)
16.1 g/100 g (40 °C)
15.3 g/100 g (60 °C)
|Solubility in ethanol||2.45 g/100 g (0 °C)|
2.32 g/100 g (20 °C)
2.29 g/100 g (30 °C)
2.35 g/100 g (70 °C)
|Solubility in formic acid||19.3 g/100 g (18 °C)|
19.4 g/100 g (25 °C)
|Solubility in glycerol||38.7 g/100 g (20 °C)|
|Solubility in dimethylformamide||3.2 g/100 g (10.3 °C)|
|Vapor pressure||1 torr (806 °C)|
5 torr (903 °C)
|Thermal conductivity||5.6 W/m·K (150 K)|
Refractive index (nD)
|1.6428 (24 °C)|
nKrF = 1.8467 (24 °C)
nHe–Ne = 1.6389 (24 °C)
|Viscosity||1.42 cP (762 °C)|
1.08 cP (857 °C)
0.96 cP (937 °C)
a = 5.97 Å
Heat capacity (C)
Std enthalpy of
Gibbs free energy (ΔfG˚)
|Safety data sheet||External MSDS|
|Flash point||800 °C (1,470 °F; 1,070 K)|
|Lethal dose or concentration (LD, LC):|
LD50 (median dose)
|3500 mg/kg (rats, oral)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Sodium bromide is an inorganic compound with the formula NaBr. It is a high-melting white, crystalline solid that resembles sodium chloride. It is a widely used source of the bromide ion and has many applications.
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 widely used for the preparation of other bromides in organic synthesis and other areas. It is a source of the bromide nucleophile to convert alkyl chlorides to more reactive alkyl bromides by the Finkelstein reaction:
Sodium bromide is used in conjunction with chlorine as a disinfectant for hot tubs and swimming pools.
Sodium bromide is used to prepare dense fluids used in oil wells.
NaBr has a very low toxicity with an oral LD50 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.
|Wikimedia Commons has media related to Sodium bromide.|