Sodium bromide

Sodium bromide
Names
	IUPAC name Sodium bromide
Identifiers
CAS Number	anhydrous: 7647-15-6 ; dihydrate: 13466-08-5 ;
3D model (JSmol)	anhydrous: Interactive image;
ChEMBL	anhydrous: ChEMBL1644694 ;
ChemSpider	anhydrous: 22712 ;
ECHA InfoCard	100.028.727
PubChem CID	anhydrous: 253881;
RTECS number	anhydrous: VZ3150000;
UNII	anhydrous: LC1V549NOM ;
CompTox Dashboard (EPA)	anhydrous: DTXSID3034903 ;
	InChI InChI=1S/BrH.Na/h1H;/q;+1/p-1 Key: JHJLBTNAGRQEKS-UHFFFAOYSA-M ; anhydrous: InChI=1/BrH.Na/h1H;/q;+1/p-1 Key: JHJLBTNAGRQEKS-REWHXWOFAR;
	SMILES anhydrous: [Na+].[Br-];
Properties
Chemical formula	NaBr
Molar mass	102.894 g·mol−1
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) ; (anhydrous); 36 °C (97 °F; 309 K); (dihydrate) decomposes
Boiling point	1,390 °C (2,530 °F; 1,660 K)
Solubility in water	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; 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)
Magnetic susceptibility (χ)	−41.0·10−6 cm3/mol
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)
Structure
Crystal structure	Cubic
Lattice constant	a = 5.97 Å
Thermochemistry
Heat capacity (C)	51.4 J/(mol·K)
Std molar; entropy (S⦵298)	86.82 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	−361.41 kJ/mol
Gibbs free energy (ΔfG⦵)	−349.3 kJ/mol
Pharmacology
Legal status	AU: S4 (Prescription only) /S5;
Hazards
NFPA 704 (fire diamond)	2 0 0
Flash point	800 °C (1,470 °F; 1,070 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	3500 mg/kg (rats, oral)
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Sodium fluoride; Sodium chloride; Sodium iodide; Sodium astatide;
Other cations	Lithium bromide; Potassium bromide; Rubidium bromide; Caesium bromide; Francium bromide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium bromide is an inorganic compound with the formula Na Br. 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.

In repeated doses it is toxic to humans, leading to bromism, which may include symptoms such as skin rashes, drowsiness, nausea, and hallucinations.