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255599

Sigma-Aldrich

Cobalt(II) chloride hexahydrate

ACS reagent, 98%

Sinônimo(s):

Cobaltous chloride hexahydrate

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About This Item

Fórmula linear:
CoCl2 · 6H2O
Número CAS:
7791-13-1
Peso molecular:
237.93
Número CE:
231-589-4
Número MDL:
MFCD00149652
Código UNSPSC:
12352302
ID de substância PubChem:
329752799
NACRES:
NA.21

grau

ACS reagent

pressão de vapor

40 mmHg ( 0 °C)

Ensaio

98%
98.0-102.0% (ACS specification)

forma

powder, crystals or chunks

adequação da reação

reagent type: catalyst
core: cobalt

Impurezas

≤0.01% insolubles

traços de ânion

nitrate (NO3-): ≤0.01%
sulfate (SO42-): ≤0.01%

traços de cátion

Ca: ≤0.005%
Cu: ≤0.002%
Fe: ≤0.005%
K: ≤0.01%
Mg: ≤0.005%
Na: ≤0.05%
Ni: ≤0.1%
Zn: ≤0.03%

cadeia de caracteres SMILES

O.O.O.O.O.O.Cl[Co]Cl

InChI

1S/2ClH.Co.6H2O/h2*1H;;6*1H2/q;;+2;;;;;;/p-2

chave InChI

GFHNAMRJFCEERV-UHFFFAOYSA-L

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Descrição geral

Cobalt(II) chloride hexahydrate, also known as cobaltous chloride hexahydrate, is a hydrated form of cobalt and chloride. It is a crystalline solid consisting of octahedral complexes, with the coordination polyhedron of the Co2+ ion including four H2O molecules and two Cl− ions. It is highly soluble in water and is commonly used as a catalyst in various organic synthesis, such as during the synthesis of benzimidazole and biscoumarin derivatives.

Aplicação

Cobalt(II) chloride hexahydrate can be used as a catalyst for the:
  • Dioxygenation of styrenes with N-hydroxyphthalimide to synthesize corresponding alcohols and ketones.
  • Oxidative coupling of primary amines to imines.
  • Friedel-Crafts reaction between indoles and activated olefins to synthesize β-indolylketones.
  • Synthesis of β-enaminones and β-enamino esters.
  • Reaction of acyl chlorides with diselenides or disulfides to synthesize selenol and thiol esters.

Palavra indicadora

Danger

Classificações de perigo

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

Código de classe de armazenamento

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

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Certificados de análise (COA)

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International Journal of Hydrogen Energy, 36(2), 1424-1432 (2011)
A simple and convenient one-pot synthesis of benzimidazole derivatives using cobalt (II) chloride hexahydrate as catalyst.
Khan AT, et al.
Synthetic Communications, 39(13), 2339-2346 (2009)
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Electronic absorption spectra of tetragonal and pseudotetragonal cobalt (II). II. Cobalt chloride hexahydrate and cobalt chloride hexahydrate-d12.
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