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7646-79-9 - Cobalt(II) chloride, anhydrous, 99.7% (metals basis) - 12303 - Alfa Aesar

12303 Cobalt(II) chloride, anhydrous, 99.7% (metals basis)

Numéro CAS
7646-79-9
Synonymes

Dimensions Prix ($) Quantité Disponibilité
50g 52,20
250g 188,00
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Cobalt(II) chloride, anhydrous, 99.7% (metals basis)

MDL
MFCD00010938
EINECS
231-589-4

Propriétés chimiques

Formule
Cl2Co
Poids formulaire
129.84
Forme
Powder
Point de fusion
735°
Point d'ébullition
1049°
Densité
3.367
Sensibilité
Hygroscopic
Solubilité
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 and deliquescent. Store in an air tight container.

Références bibliographiques

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.

Cahiez, G.; Moyeux, A. Cobalt-catalyzed cross coupling reactions. Chem. Rev. 2010, 110, 1435-1462.

Mentions de danger et de prudence du SGH

Mentions de danger (UE): 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.

Mentions de prudence: 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.

Autres références

Merck
14,2437
Classe de danger
9
Groupe d'emballage
III
Code tarifaire harmonisé
2827.39
TSCA
Yes
RTECS
GF9800000

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