Cobalt(II) carbonate

Cobalt(II) carbonate
Cobalt(II) carbonate powder
Names
IUPAC name
Cobalt(II) carbonate
Other names
Cobaltous carbonate; cobalt(II) salt
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.007.428 Edit this at Wikidata
UNII
  • InChI=1S/CH2O3.Co/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 ☒N
    Key: ZOTKGJBKKKVBJZ-UHFFFAOYSA-L ☒N
  • InChI=1/CH2O3.Co/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
    Key: ZOTKGJBKKKVBJZ-NUQVWONBAB
  • C(=O)([O-])[O-].[Co+2]
Properties
CoCO3
Molar mass 118.941 g/mol
Appearance pink solid
Density 4.13 g/cm3
Melting point 427 °C (801 °F; 700 K) [3]
decomposes before melting to cobalt(II) oxide (anhydrous)
140 °C (284 °F; 413 K)
decomposes (hexahydrate)
0.000142 g/100 mL (20 °C)[1]
1.0·10−10[2]
Solubility soluble in acid
negligible in alcohol, methyl acetate
insoluble in ethanol
1.855
Structure
Rhombohedral (anhydrous)
Trigonal (hexahydrate)
Thermochemistry
79.9 J/mol·K[3]
−722.6 kJ/mol[3]
-651 kJ/mol[3]
Hazards
GHS labelling:
GHS07: Exclamation markGHS08: Health hazard[4]
Warning
H302, H315, H317, H319, H335, H351[4]
P261, P280, P305+P351+P338[4]
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 hazards (white): no code
2
0
0
Lethal dose or concentration (LD, LC):
640 mg/kg (oral, rats)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Cobalt(II) carbonate is the inorganic compound with the formula CoCO3. This pink paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts.[5] Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite.[6]

  1. ^ Haynes, W.M., ed. (2017). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press, Taylor & Francis Group. pp. 4–58. ISBN 978-1-4987-5429-3.
  2. ^ "Solubility product constants". Archived from the original on 2012-06-15. Retrieved 2012-05-17.
  3. ^ a b c d "Cobalt(II) carbonate".
  4. ^ a b c Sigma-Aldrich Co., Cobalt(II) carbonate. Retrieved on 2014-05-06.
  5. ^ Donaldson, John Dallas; Beyersmann, Detmar (2005). "Cobalt and Cobalt Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a07_281.pub2. ISBN 3527306730.
  6. ^ "Spherocobaltite: Spherocobaltite mineral information and data". www.mindat.org. Retrieved 7 August 2018.