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Merck

255599

Cobalt(II) chloride hexahydrate

ACS reagent, 98%

Synonym(s):

Cobaltous chloride hexahydrate

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About This Item

Linear Formula:
CoCl2 · 6H2O
CAS Number:
7791-13-1
Molecular Weight:
237.93
NACRES:
NA.21
PubChem Substance ID:
329752799
UNSPSC Code:
12352302
EC Number:
231-589-4
MDL number:
MFCD00149652
Assay:
98%, 98.0-102.0% (ACS specification)
Grade:
ACS reagent
Form:
powder, crystals or chunks

Key Documents

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InChI key

GFHNAMRJFCEERV-UHFFFAOYSA-L

InChI

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

SMILES string

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

grade

ACS reagent

vapor pressure

40 mmHg ( 0 °C)

assay

98%, 98.0-102.0% (ACS specification)

form

powder, crystals or chunks

reaction suitability

reagent type: catalyst
core: cobalt

impurities

≤0.01% insolubles

anion traces

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

cation traces

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

Quality Level

200

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General description

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.

Application

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.

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

7791-13-1

CAS No.

7791-13-1

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ4882
MKCX9128
MKCX2098
MKCW6202
MKCW3373

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CoCl2. 6H2O crystal growth and its spectral characteristics
Diana Sergeevna M, et al.
Optical Materials, 144, 114339-114339 (2023)
Cobalt (II) Chloride Hexahydrate as an Efficient and Inexpensive Catalyst for the Preparation of Biscoumarin Derivatives.
Mohammad Reza N, et al.
Advances in Chemistry, 1-6 null
A simple and convenient one-pot synthesis of benzimidazole derivatives using cobalt (II) chloride hexahydrate as catalyst
Abu K T, et al.
Synthetic Communications, 39, 2339-2346 (2009)
Preparation of PVDF nanofiber composites for hydrogen generation from sodium borohydride.
Chinnappan A, et al.
Energy, 36(2), 755-759 (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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