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.

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