Barium bromide

Barium bromide
	Space-filling model of the crystal structure
Identifiers
CAS Number	10553-31-8 (anhydrous) [PubChem]; 7791-28-8 (dihydrate) [PubChem];
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	59728 ;
ECHA InfoCard	100.031.024
EC Number	234-140-0;
PubChem CID	5462743 (anhydrous); 44537612 (dihydrate);
UNII	TI8NM689HW ;
CompTox Dashboard (EPA)	DTXSID2065123 ;
	InChI InChI=1S/Ba.2BrH/h;21H/q+2;;/p-2 Key: NKQIMNKPSDEDMO-UHFFFAOYSA-L ; InChI=1/Ba.2BrH/h;21H/q+2;;/p-2 Key: NKQIMNKPSDEDMO-NUQVWONBAE;
	SMILES Br[Ba]Br; [Ba+2].[Br-].[Br-];
Properties
Chemical formula	BaBr2 (anhydrous); BaBr2·2H2O (dihydrate)
Molar mass	297.14 g/mol
Appearance	White solid
Density	4.78 g/cm3 (anhydrous) ; 3.58 g/cm3 (dihydrate)
Melting point	857 °C (1,575 °F; 1,130 K)
Boiling point	1,835 °C (3,335 °F; 2,108 K)
Solubility in water	92.2 g/100 mL (0°C)
Magnetic susceptibility (χ)	-92.0·10−6 cm3/mol
Structure
Crystal structure	PbCl2-type (orthorhombic, oP12)
Space group	Pnma (No. 62)
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−181.1 kcal/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332
Precautionary statements	P261, P264, P270, P271, P301+P312, P304+P312, P304+P340, P312, P330, P501
NFPA 704 (fire diamond)	3 0 0
Safety data sheet (SDS)	NIH BaBr
Related compounds
Other anions	Barium fluoride; Barium chloride; Barium iodide
Other cations	Beryllium bromide; Magnesium bromide; Calcium bromide; Strontium bromide; Radium bromide; Lead 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

Barium bromide is the chemical compound with the formula BaBr₂. It is ionic and hygroscopic in nature.

Identifiers
Space-filling model of the crystal structure
CAS Number	10553-31-8 (anhydrous)^Y[PubChem] 7791-28-8 (dihydrate)^Y[PubChem]
3D model (JSmol)	Interactive image Interactive image
ChemSpider	59728^Y
ECHA InfoCard	100.031.024
EC Number	234-140-0
PubChem CID	5462743 (anhydrous) 44537612 (dihydrate)
UNII	TI8NM689HW^Y
CompTox Dashboard (EPA)	DTXSID2065123
InChI InChI=1S/Ba.2BrH/h;21H/q+2;;/p-2^Y Key: NKQIMNKPSDEDMO-UHFFFAOYSA-L^Y InChI=1/Ba.2BrH/h;21H/q+2;;/p-2 Key: NKQIMNKPSDEDMO-NUQVWONBAE
SMILES Br[Ba]Br [Ba+2].[Br-].[Br-]
Properties
Chemical formula	Ba Br₂ (anhydrous) BaBr₂·2H₂O (dihydrate)
Molar mass	297.14 g/mol
Appearance	White solid
Density	4.78 g/cm³ (anhydrous) 3.58 g/cm³ (dihydrate)
Melting point	857 °C (1,575 °F; 1,130 K)
Boiling point	1,835 °C (3,335 °F; 2,108 K)
Solubility in water	92.2 g/100 mL (0°C)
Magnetic susceptibility (χ)	-92.0·10⁻⁶ cm³/mol
Structure
Crystal structure	PbCl₂-type (orthorhombic, oP12)
Space group	Pnma (No. 62)
Thermochemistry
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	−181.1 kcal/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Toxic
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332
Precautionary statements	P261, P264, P270, P271, P301+P312, P304+P312, P304+P340, P312, P330, P501
NFPA 704 (fire diamond)	3 0 0
Safety data sheet (SDS)	NIH BaBr
Related compounds
Other anions	Barium fluoride Barium chloride Barium iodide
Other cations	Beryllium bromide Magnesium bromide Calcium bromide Strontium bromide Radium bromide Lead bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references