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Nickel(II) oxide

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Identification
Molecular formula
NiO
CAS number
1313-99-1
IUPAC name
oxonickel
State
State

At room temperature, Nickel(II) oxide is a solid. It is often handled in powdered form for various industrial applications or research purposes.

Melting point (Celsius)
1 955.00
Melting point (Kelvin)
2 228.00
Boiling point (Celsius)
2 730.00
Boiling point (Kelvin)
3 003.00
General information
Molecular weight
74.69g/mol
Molar mass
74.6930g/mol
Density
6.6700g/cm3
Appearence

Nickel(II) oxide appears as a green to black powder. The substance can either manifest in a powdered form or as very fine crystals depending on purity and particle size. Its hue can vary slightly from greenish to nearly black, influenced by the granularity and specific processing methods utilized during its preparation.

Comment on solubility

Solubility of Oxonickel

Oxonickel, with the chemical formula NiO, is known for its intriguing solubility characteristics. Here’s what you need to know about its solubility:

  • General Solubility: Oxonickel is typically considered to be insoluble in water. It does not dissolve readily, which makes it less accessible in aqueous solutions.
  • Acidic Solutions: Interestingly, its solubility can increase in the presence of strong acids. The ionic form may dissolve due to the formation of nickel ions:
    • In hydrochloric acid, for example, NiO reacts to produce nickel(II) chloride.
  • Basic Environments: In contrast, oxonickel shows better solubility in alkaline conditions. Here, it can form complex ions, enhancing its dissolution.
  • Temperature Effects: Temperature also plays a crucial role; increasing temperatures generally improve the solubility of many oxides, including NiO.

To summarize, while oxonickel is primarily insoluble in water, its solubility can significantly shift in the presence of acids and bases, showcasing the compound's versatile nature in various chemical settings.

Interesting facts

Interesting Facts about Oxonickel

Oxonickel, also known as nickel oxide or nickel(II) oxide, is a fascinating compound with various applications and significance in both industry and research. Here are some intriguing aspects of this compound:

  • Dual Roles: Oxonickel serves as both a valuable catalyst and an important precursor in the synthesis of nickel-based materials.
  • Ceramics: It plays a critical role in the production of ceramic pigments, contributing to the color and stability of materials used in pottery and tiles.
  • Electrochemistry: The compound is utilized in rechargeable batteries, particularly in nickel-cadmium cells, enhancing their performance and longevity.
  • Environmental Impact: Research into oxonickel has revealed its potential use in environmental technologies, such as in catalytic converters for reducing harmful emissions in vehicles.
  • Historical Significance: Nickel has been used since ancient times; however, the discovery of oxonickel in its various forms in the 18th century marked significant advancements in metallurgy and material science.

One noteworthy aspect of studying oxonickel is its interaction with light. As noted by researchers, “nickel oxide can exhibit interesting optical properties depending on its morphology and structure.” This characteristic makes it a subject of interest in fields such as photonics and optoelectronics, paving the way for innovative technologies.

In conclusion, oxonickel is not merely a compound of nickel but a key player in various industrial applications, environmental science, and materials research. Its unique properties and versatile uses continue to inspire scientists and engineers alike.

Synonyms
Nickel(II) oxide
1313-99-1
NICKEL OXIDE
oxonickel
Nickel oxide (NiO)
Nickelous oxide
Nickel monoxide
Bunsenite
Nickel (II) oxide
CCRIS 431
HSDB 1664
EINECS 215-215-7
UNII-C3574QBZ3Y
Nickel(II) oxide (1:1)
CCRIS 7578
CI 77777
NICKEL MONOOXIDE
EC 215-215-7
11099-02-8
NICKEL OXIDE, NiO
Nickel (II) oxide, green
Nickel oxideo)
HYDRATE NICKEL
NICKEL (T+) OXIDE
Nickel(II) nickel(III) oxide
DTXCID301477324
DTXSID301015445
EINECS 234-323-5
215-215-7
234-323-5
dtxsid7025710
green nickel oxide
nickel monoxid
nickel monoxide [mi]
nickel oxide [hsdb]
nickel peroxide
nickel(II)oxide
34492-97-2
MFCD00011145
Mononickel oxide
Black nickel oxide
Nickel(2+) oxide
Nickel oxide sinter 75
Nickel (II) oxide green
Bunsenite (NiO)
nickel(II) oxide, black
oxo-nickel
C.I. 77777
nickel hydride oxide
Nickel Oxide nanowire
Nickel Oxide Nanofibers
Nickel Oxide Nanopowder
Nickel(II) oxide, CP
Nano Nickel Oxide Powder
Nickel(II) oxide, green
Nickel II Oxide Dispersion
Nickel(II)oxide99.99%
Nickel(II) Oxide Nanowires
Nickel (II) Oxide Dispersion
Nickel (II) Oxide Nanopowder
Nickel(II) oxide, Puratronic?
Nickel oxide nanopowder (50 nm)
DTXSID001033642
Copper Doped Nickel Oxide Dispersion
Nickel(II) oxide (99.99%-Ni)
AKOS015904166
HY-W075770
Nickel(II) oxide, puriss., 75.0%
Nickel(II) oxide, green, Ni 78.5%
FN179703
SY071621
CS-0181978
NS00080964
Nickel(II) oxide, green, -325 mesh, 99%
Nickel(II) oxide, 99.99% trace metals basis
Q411221
Neodymium Nickel Oxide (NdNiO3) Sputtering Targets
Nickel oxide supported on silica, 60 wt. % (NiO)
Nickel(II) oxide, >=99.995% (Trace Metals Analysis)
Nickel(II) oxide, nanowires, diam. x L ~20 nm x 10 mum
Nickel Oxide Nanoparticles/ Nanopowder (NiO, 99.9%, 50nm)
Nickel(II) oxide, nanopowder, <50 nm particle size (TEM), 99.8% trace metals basis