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

B22031 Cobalt(II) chloride, anhydrous, 97%

CAS-Nummer
7646-79-9
Synonyme

Größe Preis ($) Menge Verfügbarkeit
25g 36,80
100g 77,20
500g 275,00
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Cobalt(II) chloride, anhydrous, 97%

MDL
MFCD00010938
EINECS
231-589-4

Chemische Eigenschaften

Formel
Cl2Co
Molmasse
129.84
Schmelzpunkt
735°
Siedepunkt
1049°
Dichte
3.367
Sensitivität
Hygroscopic
Löslichkeit
Freely soluble in water and methanol. Soluble in alcohol, acetone, ether, glycerol, and pyridine.

Anwendungen

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.

Bemerkungen

Hygroscopic. Incompatible with strong oxidizing agents.

Literaturverweise

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 Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H302-H334-H317-H341-H350-H360

Harmful if swallowed. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. Suspected of causing genetic defects. May cause cancer. May damage fertility or the unborn child.

Sicherheitshinweise: P284-P201-P261-P280-P342+P311a-P301+P312a-P363-P304+P341-P405-P501a

Wear respiratory protection. Obtain special instructions before use. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. If experiencing respiratory symptoms: IF SWALLOWED: Wash contaminated clothing before reuse. IF INHALED: If breathing is difficult, remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Merck
14,2437
Gefahrenklasse
9
Verpackungsgruppe
III
Harmonized Tariff Code
2827.39
TSCA
Yes
RTECS
GF9800000

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