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Nickel(III) oxide

Nickel(III) oxide
Nickel (III) oxide powder
IUPAC name
Nickel (III) oxide
Other names
Nickel sesquioxide,
nickel trioxide
ECHA InfoCard 100.013.835
EC Number 215-217-8
RTECS number QR8420000
Molar mass 165.39 g/mol
Appearance black-dark gray solid
Density 4.84 g/cm3
Melting point 600 °C (1,112 °F; 873 K) (decomposes)
NFPA 704
Flammability code 0: Will not burn. E.g. waterHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Nickel(III) oxide is the inorganic compound with the formula Ni2O3. It is not well characterised,[1] sometimes referred to as black nickel oxide. Traces of Ni2O3 on nickel surfaces have been mentioned.[2][3] A related, better characterized material is nickel oxide hydroxide (NiOOH), which is likely the reagent employed in organic synthesis since it is generated in aqueous media.


  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. ^ Aggarwal, P. S.; Goswami, A. (1961). "An oxide of tervalent nickel". The Journal of Physical Chemistry. 65 (11): 2105. doi:10.1021/j100828a503. ISSN 0022-3654.
  3. ^ Kang, Jin-Kyu; Rhee, Shi-Woo (2001). "Chemical vapor deposition of nickel oxide films from Ni(C5H5)2/O2". Thin Solid Films. 391 (1): 57–61. doi:10.1016/S0040-6090(01)00962-2.