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7646-79-9 - Cobalt(II) chloride, anhydrous, 97% - B22031 - Alfa Aesar

B22031 Cobalt(II) chloride, anhydrous, 97%

CAS Number
7646-79-9
Synonyms

Size Price ($) Quantity Availability
25g 36.67
100g 76.84
500g 273.98
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Cobalt(II) chloride, anhydrous, 97%

MDL
MFCD00010938
EINECS
231-589-4

Chemical Properties

Formula
Cl2Co
Formula Weight
129.84
Melting point
735°
Boiling Point
1049°
Density
3.367
Sensitivity
Hygroscopic
Solubility
Freely soluble in water and methanol. Soluble in alcohol, acetone, ether, glycerol, and pyridine.

Applications

Cobalt(II) chloride is used in humidity indicator in weather instruments. In the anhydrous form, it finds use in electroplating of cobalt, in organic chemistry and is a precursor to cobaltocene, (bis(cyclopentadienyl)cobalt(II), which is a good reducing agent. It also serves as a Lewis acid. Cobalt chloride is an indicator for water in desiccants, owing to the reversible hydration/dehydration coupled with distinct color change. Cobalt chloride is useful for producing invisible ink as it turns blue when heated and becomes invisible once it gets cooled. Cobalt(II) chloride catalyzes cross coupling of aryl halides or vinyl halides with aryl grignard reagents in excellent yields.

Notes

Hygroscopic. Incompatible with strong oxidizing agents.

Literature References

Holstein, H.; Ranebo, Y.; Rääf, C. L. Human metabolism of orally administered radioactive cobalt chloride. J. Environ. Radioactiv. 2015, 143, 152-158.

Pereira, A. C.; Reis, B. F.; Rocha, F. R. P. An air carrier flow system for the spectrophotometric determination of water in biodiesel exploiting bleaching of the cobalt chloride complex. Talanta 2015, 131, 21-25.

GHS Hazard and Precautionary Statements

Hazard Statements: H334-H350-H360-H317-H341-H400-H410-H302

May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause cancer. May damage fertility or the unborn child. May cause an allergic skin reaction. Suspected of causing genetic defects. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects. Harmful if swallowed.

Precautionary Statements: P285-P201-P261-P273-P280-P281-P342+P311-P301+P312-P405-P501a

In case of inadequate ventilation wear respiratory protection. Obtain special instructions before use. Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. Use personal protective equipment as required. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,2437
Hazard Class
9
Packing Group
III
Harmonized Tariff Code
2827.39
TSCA
Yes
RTECS
GF9800000

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