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60818

Sigma-Aldrich

Cobalt(II) chloride

purum p.a., anhydrous, ≥98.0% (KT)

Synonym(s):
Cobaltous chloride, Cobalt dichloride, Dichlorocobalt, Cobalt muriate
Linear Formula:
CoCl2
CAS Number:
Molecular Weight:
129.84
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

vapor pressure

40 mmHg ( 0 °C)

grade

purum p.a.

assay

≥98.0% (KT)

form

powder

impurities

≤2% water

mp

724 °C (lit.)

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤100 mg/kg
Na: ≤200 mg/kg
Ni: ≤1000 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

Cl[Co]Cl

InChI

1S/2ClH.Co/h2*1H;/q;;+2/p-2

InChI key

GVPFVAHMJGGAJG-UHFFFAOYSA-L

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General description

Cobalt(II) chloride is an anhydrous cobalt salt. Cobalt(II) chloride participates in the synthesis of various esters in the presence of acetonitrile.

Application

The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties.
Cobalt(II) chloride may be employed as a catalyst in the following studies:
  • Acylation of various alcohols (primary and secondary).
  • Acylation of various hydroxyl compounds (high selectivity).
  • Regioselective ring-opening reaction of oxiranes.
  • Coupling reactions of anhydrides or acid chlorides with thiols.
  • Protection of aldehydes, via chemoselective dithioacetalization reaction.
  • Solvent-free synthesis of β-enaminones and β-enamino esters.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1A

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK Germany

WGK 3

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

Cobalt (II) chloride-mediated synthesis of β-enamino compounds under solvent-free conditions.
Zhang ZH and Hu JY.
Journal of the Brazilian Chemical Society, 17(7), 1447-1451 (2006)
Cobalt (II) chloride catalysed cleavage of ethers with acyl halides: Scope and mechanism.
Iqbal J and Srivastava RR.
Tetrahedron, 47(18), 3155-3170 (1991)
Xin Li et al.
Molecular and cellular biology, 40(8) (2020-01-29)
Fibrosis is recognized as the major pathological change in adipose tissue during the development of obesity. However, the detailed mechanisms governing the interactions between the fibrotic components and their modifiers remain largely unclear. Here, we reported that matrix metalloproteinase 14...
Cobalt (II) chloride catalyzed acylation of alcohols with acetic anhydride: scope and mechanism.
Iqbal J and Srivastava RR.
The Journal of Organic Chemistry, 57(7), 2001-2007 (1997)
Cobalt (II) chloride catalysed coupling of thiols and anhydrides: a new and efficient synthesis of thiol esters.
Ahmad S and Iqbal J.
Tetrahedron Letters, 27(32), 3791-3794 (1986)

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