Cobalt(II) nitrate

Cobalt(II) nitrate
Names
	Other names Cobaltous nitrate; Nitric acid, cobalt(2+) salt
Identifiers
CAS Number	10026-22-9 hexahydrate ; 10141-05-6 anhydrous; 7697-37-2 dihydrate;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:86209 ;
ChemSpider	23369 ;
ECHA InfoCard	100.030.353
EC Number	233-402-1;
PubChem CID	25000;
RTECS number	GG1109000;
UNII	65W79BFD5V ;
UN number	1477
CompTox Dashboard (EPA)	DTXSID9064970 ;
	InChI InChI=1S/Co.2NO3/c;22-1(3)4/q+2;2-1 Key: UFMZWBIQTDUYBN-UHFFFAOYSA-N ; InChI=1/Co.2NO3/c;22-1(3)4/q+2;2-1 Key: UFMZWBIQTDUYBN-UHFFFAOYAS;
	SMILES [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O;
Properties
Chemical formula	Co(NO3)2(H2O)6
Molar mass	291.03 g/mol (hexahydrate); 182.943 g/mol (anhydrous)
Appearance	pale red powder (anhydrous) ; red crystalline (hexahydrate)
Odor	odorless
Density	1.87 g/cm3 (hexahydrate); 2.49 g/cm3 (anhydrous)
Melting point	100 °C (212 °F; 373 K) decomposes (anhydrous) ; 55 °C (hexahydrate)
Boiling point	100 to 105 °C (212 to 221 °F; 373 to 378 K) decomposes (anhydrous) ; 74 °C, decomposes (hexahydrate)
Solubility in water	anhydrous: 84.03 g/100 mL (0 °C) ; 334.9 g/100 mL (90 °C) soluble (anhydrous)
Solubility	soluble in alcohol, acetone, ethanol, ammonia (hexahydrate), methanol 2.1 g/100 mL
Structure
Coordination geometry	monoclinic (hexahydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H341, H350, H360, H410
Precautionary statements	P201, P202, P261, P272, P273, P280, P281, P285, P302+P352, P304+P341, P308+P313, P321, P333+P313, P342+P311, P363, P391, P405, P501
NFPA 704 (fire diamond)	2 0 0 OX
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	434 mg/kg; rat, oral (anhydrous) ; 691 mg/kg; rat, oral (hexahydrate)
Safety data sheet (SDS)	Cobalt (II) Nitrate MSDS
Related compounds
Other anions	Cobalt(II) sulfate; Cobalt(II) chloride; Cobalt oxalate
Other cations	Iron(III) nitrate; Nickel(II) nitrate
	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 nitrate is the inorganic compound with the formula Co(NO₃)₂^.xH₂O. It is cobalt(II)'s salt. The most common form is the hexahydrate Co(NO₃)₂·6H₂O, which is a red-brown deliquescent salt that is soluble in water and other polar solvents.

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