Cobalt(II) bromide

Cobalt(II) bromide
	Structure of cobalt(II) bromide tetrahydrate
	Crystal structure of cobalt(II) bromide
	Anhydrous cobalt(II) bromide in a vial
Identifiers
CAS Number	7789-43-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	23012 ;
ECHA InfoCard	100.029.242
EC Number	232-166-7;
PubChem CID	24610;
RTECS number	GF9595000;
UNII	7M7RX75BAL ;
UN number	3077
CompTox Dashboard (EPA)	DTXSID50894158 ;
	InChI InChI=1S/2BrH.Co/h21H;/q;;+2/p-2 Key: BZRRQSJJPUGBAA-UHFFFAOYSA-L ; InChI=1/2BrH.Co/h21H;/q;;+2/p-2 Key: BZRRQSJJPUGBAA-NUQVWONBAJ;
	SMILES [Co](Br)Br;
Properties
Chemical formula	CoBr2, CoBr2.6H2O, CoBr2.2H2O
Molar mass	218.7412 g/mol (anhydrous) ; 326.74 g/mol (hexahydrate)
Appearance	Bright green crystals (anhydrous) ; Red-purple crystals (hexahydrate)
Density	4.909 g/cm3 (anhydrous) ; 2.46 g/cm3 (hexahydrate)
Melting point	678 °C (1,252 °F; 951 K) (anhydrous) ; 47 °C (hexahydrate)
Solubility in water	anhydrous: ; 66.7 g/100 mL (59 °C) ; 68.1 g/100 mL (97 °C) hexahydrate: ; 113.2 g/100 mL (20 °C)
Solubility	77.1 g/100 mL (ethanol, 20 °C) ; 58.6 g/100 mL (methanol, 30 °C) ; soluble in methyl acetate, ether, alcohol, acetone
Magnetic susceptibility (χ)	+13000·10−6 cm3/mol
Structure
Crystal structure	Rhombohedral, hP3, SpaceGroup = P-3m1, No. 164
Coordination geometry	octahedral
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H312, H315, H317, H319, H332, H334, H335, H350
Precautionary statements	P201, P202, P261, P264, P270, P271, P272, P280, P281, P285, P301+P312, P302+P352, P304+P312, P304+P340, P304+P341, P305+P351+P338, P308+P313, P312, P321, P322, P330, P332+P313, P333+P313, P337+P313, P342+P311, P362, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)	2 0 1
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	406 mg/kg (oral, rat)
Safety data sheet (SDS)	Fisher Scientific
Related compounds
Other anions	cobalt(II) fluoride; cobalt(II) chloride; cobalt(II) iodide
Other cations	iron(II) bromide; nickel(II) 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

Cobalt(II) bromide (CoBr₂) is an inorganic compound. In its anhydrous form, it is a green solid that is soluble in water, used primarily as a catalyst in some processes.