Cobalt(II) nitrate

Cobalt(II) nitrate
Cobalt (II) Nitrate Hexahydrate Sample
Hexahydrate
Names
Other names
Cobaltous nitrate
Nitric acid, cobalt(2+) salt
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.030.353 Edit this at Wikidata
EC Number
  • 233-402-1
RTECS number
  • GG1109000
UNII
UN number 1477
  • InChI=1S/Co.2NO3/c;2*2-1(3)4/q+2;2*-1 checkY
    Key: UFMZWBIQTDUYBN-UHFFFAOYSA-N checkY
  • InChI=1/Co.2NO3/c;2*2-1(3)4/q+2;2*-1
    Key: UFMZWBIQTDUYBN-UHFFFAOYAS
  • [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
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)[citation needed]
74 °C, decomposes (hexahydrate)
anhydrous:[1] 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
monoclinic (hexahydrate)
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard
Danger
H317, H334, H341, H350, H360, H410
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)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
2
0
0
OX
Lethal dose or concentration (LD, LC):
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).
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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.[2]

  1. ^ Perrys' Chem Eng Handbook, 7th Ed
  2. ^ John Dallas Donaldson, Detmar Beyersmann, "Cobalt and Cobalt Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005. doi:10.1002/14356007.a07_281.pub2