Cobalt chloride
- CAS number
- 7646-79-9
- Molecular weight
- 129.8
- Molecular formula / chemical symbol
- CoCl2
Description
Pink to red crystals. Slight deliquescence, become dihydrate of purple or blue when heated to 52 ~ 56 ℃ lost 4 molecules crystal water. The loss of a more water molecule at 100 ℃ makes it purple amorphous powder or needle-like crystals which is easy to absorb moisture. All water loss at 120 ~ 140 ℃.
Keywords：Chloride
USES
Cobalt chloride can be used to make invisible ink.
Cobalt chloride is used in the T.R.U.E. test, or Thin-layer Rapid Use Epicutaneous Test.
Because of the magnetic properties of cobalt, it is useful as a coating for computer memory storage devices.
Cobalt and cobalt chloride may also be used in the making of building materials, paints, pigments and printing inks, vitamin B12 supplements, tattoo inks, soaps and silica gel.
Report
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Product |
Cobalt chloride |
CAS: 7646-79-9 |
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Character |
Pink to red crystals |
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Formula |
CoCl2 |
Purity: |
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Test item |
Test result |
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（CoCl2·6H2O）； |
≥98.0% |
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（Co） |
≥24.3% |
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Insoluble matter in water |
≤0.03% |
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（Pb） |
≤0.001% |
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（As） |
≤0.0005% |
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Fineness (800μm sieve) |
≥95% |
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