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208396

Sigma-Aldrich

Cobalt(II) acetate tetrahydrate

reagent grade

Synonym(s):

Cobaltous acetate tetrahydrate

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About This Item

Linear Formula:
(CH3COO)2Co · 4H2O
CAS Number:
6147-53-1
Molecular Weight:
249.08
Beilstein/REAXYS Number:
3731397
EC Number:
200-755-8
MDL number:
MFCD00149569
UNSPSC Code:
12352103
PubChem Substance ID:
329752042
NACRES:
NA.55

grade

reagent grade

form

powder or crystals

concentration

23.0-25.0% Co (EDTA titration)

SMILES string

[H]O[H].[H]O[H].[H]O[H].[H]O[H].CC(=O)O[Co]OC(C)=O

InChI

1S/2C2H4O2.Co.4H2O/c2*1-2(3)4;;;;;/h2*1H3,(H,3,4);;4*1H2/q;;+2;;;;/p-2

InChI key

ZBYYWKJVSFHYJL-UHFFFAOYSA-L

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General description

Cobalt(II) acetate tetrahydrate, commonly used as bleach and drying agent, can be produced by reacting cobalt (II) carbonate and acetic acid. It undergoes decomposition on heating up to 500°C under non-isothermal conditions. Its crystals exhibit monoclinic crystal system having space group P21/c. Cobalt(II) acetate tetrahydrate undergoes hydrothermal reaction with 1,3,5-benzenetricarboxylic acid (BTCH3) to afford Co3(BTC)2.12H2O.

Application

Cobalt(II) acetate tetrahydrate may be used as a cobalt source in the synthesis of cobalt nanoparticles and cobalt oxide thin films. It may also be used to prepare cobalt(II)-aminophenyltetrazolate coordination polymer and tricobalt complexes with mixed μ-acetato and μ-pyrazolato ligands. Cobalt(II) acetate tetrahydrate enhances the reaction rate of oxidation of 1,4-dihydropyridines using hydrogen peroxide to the corresponding pyridine derivatives.
Cobalt(II) acetate tetrahydrate may be used in the preparation of [Co3(OH)2(H2O)2(aptet)4] (aptet = 4-aminophenyltetrazolate) and new tetradentate cobalt(II)-Schiff base complex.

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Danger

Hazard Classifications

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

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

Certificates of Analysis (COA)

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Synthesis, characterization, and electrochemical behavior of a cobalt (II) salen-like complex.
Ourari A, et al.
Polyhedron, 97, 197-201 (2015)
Aromatization of Hantzsch 1, 4-dihydropyridines by hydrogen peroxide in the presence of cobalt (II) acetate.
Hashemi MM, et al.
Monatshefte fur Chemie / Chemical Monthly, 134(1), 107-110 (2003)
Cobalt nanoparticles synthesis from Co(CH3COO)2 by thermal decomposition.
Shao H, et al.
Journal of magnetism and magnetic materials, 304(1), e28-e30 (2006)
The non-isothermal decomposition of cobalt acetate tetrahydrate: a kinetic and thermodynamic study.
Mohamed M, et al.
Journal of Thermal Analysis and Calorimetry, 1(2-3), 387-404 (1994)
Chemical accuracy and precision in Rietveld analysis: The crystal structure of cobalt (II) acetate tetrahydrate.
Kaduk JA and Walt Partenheimer.
Powder Diffraction, 12(01), 27-39 (1997)
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