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Cobalt Oxide
Cobalt oxide is an inorganic compound that has been described as an olive-green or gray solid. It is used extensively in the ceramics industry as an additive to create blue-colored glazes and enamels, as well as in the chemical industry for producing cobalt(II) salts
The most common types of cobalt oxides are: Cobalt(II) oxide (CoO) - an olive-green or gray solid.
Cobalt(II,III) oxide (Co₃O₄) - a black, antiferromagnetic solid. This is the most important cobalt oxide.
Cobalt(III) oxide (Co₂O₃) - a less common black solid.
| Sr. No | Test | Specification |
|---|---|---|
|
1 |
CAS Number:
|
1308-06-1
|
|
2 |
Formula
|
CoO |
|
3 |
Molecular weight
|
74.93 g/mol
|
|
4 |
Synonym
|
Cobaltous OXIDE
|
|
5 |
Appearance (color)
|
STEEL GREY-BLACK
|
|
6 |
Appearance (form)
|
POWDER |
|
7 |
Solubility
|
Insoluble in water, Soluble in acids
|
|
8 |
Cobalt (%)
|
72 – 73 % min
|
|
9 |
Calcium (Ca)
|
< 0.005 %
|
|
10 |
Chloride
|
< 0.001 %
|
|
11 |
Iron
|
< 0.01 %
|
|
12
|
Sulphate
|
< 0.45 %
|