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399973

Sigma-Aldrich

Cobalt(II) acetate

99.99% trace metals basis

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Synonym(s):
Cobalt diacetate, Cobaltous acetate, Cobaltous diacetate
Linear Formula:
(CH3CO2)2Co
CAS Number:
Molecular Weight:
177.02
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.99% trace metals basis

form

crystals and lumps
solid

reaction suitability

core: cobalt

impurities

≤5% water

mp

298 °C (dec.) (lit.)

SMILES string

CC([O-])=O.[Co+2]

InChI

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

InChI key

QAHREYKOYSIQPH-UHFFFAOYSA-L

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This Item
403024409332517933
Cobalt(II) acetate 99.99% trace metals basis

399973

Cobalt(II) acetate

-
Cobalt(II) acetate tetrahydrate ACS reagent, ≥98.0%

403024

Cobalt(II) acetate tetrahydrate

Essential Grade
Cobalt(II) chloride AnhydroBeads™, −10 mesh, 99.995% trace metals basis

409332

Cobalt(II) chloride

-
Iron(II) acetate ≥99.99% trace metals basis

517933

Iron(II) acetate

-
form

crystals and lumps, solid

form

crystalline powder, granular

form

beads

form

solid

mp

298 °C (dec.) (lit.)

mp

-

mp

724 °C (lit.)

mp

190-200 °C (dec.) (lit.)

impurities

≤5% water

impurities

≤0.01% insolubles

impurities

≤15.0 ppm Trace Metal Analysis

impurities

-

reaction suitability

core: cobalt

reaction suitability

-

reaction suitability

-

reaction suitability

core: iron

Quality Level

200

Quality Level

-

Quality Level

-

Quality Level

-

General description

Cobalt(II) acetate is a crystalline compound that tends to form complexes with other molecules due to the presence of the cobalt ion. It is widely used in catalysis, nanomaterial synthesis, and electroplating. It is also used as a drying agent for paints and varnishes and as a reagent to test for the presence of acetate ions in solutions.

Application

Cobalt(II) acetate can be used as:
  • A precursor to synthesize cobalt titanium oxide catalysts for the oxygen evolution reaction.
  • A starting material to prepare polymer stabilized Co nanocatalyst for growing carbon nanofibers.
  • A catalyst for direct amination of azoles under mild reaction conditions.

signalword

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

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

wgk_germany

WGK 3

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Tuning Composition and Activity of Cobalt Titanium Oxide Catalysts for the Oxygen Evolution Reaction
Linsey C. Seitz, et al.
Electrochimica Acta, 193, 240-245 (2016)
Cobalt-and Manganese-Catalyzed Direct Amination of Azoles under Mild Reaction Conditions and the Mechanistic Details
Ji Young Kim, et al.
Angewandte Chemie (International Edition in English), 122, 10095-10099 (2010)
Xianying Han et al.
Nanomaterials (Basel, Switzerland), 8(4) (2018-04-21)
The morphology of metal oxide nanostructures influences the response of the materials in a given application. In addition to changing the composition, doping can also modify the morphology of a host nanomaterial. Herein, we determine the effect of dopant concentration
Nanoparticles-enabled low temperature growth of carbon nanofibers and their properties for supercapacitors
Rickard Andersson, et al.},
Advanced Materials Letters, 9, 444-449 (2019)
Euiyeon Jung et al.
Nature materials, 19(4), 436-442 (2020-01-15)
Despite the growing demand for hydrogen peroxide it is almost exclusively manufactured by the energy-intensive anthraquinone process. Alternatively, H2O2 can be produced electrochemically via the two-electron oxygen reduction reaction, although the performance of the state-of-the-art electrocatalysts is insufficient to meet

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