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727970

Sigma-Aldrich

Cobalt(II) acetylacetonate

≥99.0% (KT)

Synonym(s):

2,4-Pentanedione cobalt(II) derivative, Bis(2,4-pentanedionato)cobalt, Co(acac)2, Cobaltous acetylacetonate

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About This Item

Linear Formula:
Co(C5H7O2)2
CAS Number:
14024-48-7
Molecular Weight:
257.15
EC Number:
237-855-6
MDL number:
MFCD00000014
UNSPSC Code:
12161600
PubChem Substance ID:
329764366
NACRES:
NA.22

Quality Level

100

Assay

≥99.0% (KT)

form

powder

reaction suitability

core: cobalt
reagent type: catalyst

particle size

≤20 mesh

mp

165-170 °C (lit.)

anion traces

chloride, bromide (as Cl)-: ≤500 mg/kg

cation traces

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

SMILES string

CC(=O)\C=C(\C)O[Co]O\C(C)=C/C(C)=O

InChI

1S/2C5H8O2.Co/c2*1-4(6)3-5(2)7;/h2*3,6H,1-2H3;/q;;+2/p-2/b2*4-3-;

InChI key

UTYYEGLZLFAFDI-FDGPNNRMSA-L

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General description

Cobalt(II) acetylacetonate is a coordination compound commonly used as a precursor to synthesize cobalt-containing materials. It can also be used as a catalyst in organic synthesis.

Application

Cobalt(II) acetylacetonate can be used as a catalyst for oxidative isocyanide insertion and catalytic cycloaddition reactions. Additionally, Co(acac)2 is also used in allylic and benzylic oxidation reactions.

Cobalt(II) acetylacetonate can be used as a catalyst for the dehydration reaction of aldoximes to synthesize nitriles.

Signal Word

Danger

Hazard Classifications

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

Storage Class Code

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

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

727970-100G:4548173924373
727970-25G:4548173924380
727970-VAR:
727970-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM6463
BCCL5364
BCCL8761
BCCH9362
BCCG7424

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Mechanism of the Catalytic Deperoxidation of tert-Butylhydroperoxide with Cobalt (II) Acetylacetonate
Turra, N, et al.
Chemistry?A European Journal , 16(44), 13226-13235 (2010)
Cobalt (II) catalyzed dehydration of aldoximes: A highly efficient practical procedure for the synthesis of nitriles
Catalysis Communications, 10(5), 716-719 (2009)
Kinjal Gandha et al.
Nanotechnology, 26(7), 075601-075601 (2015-01-23)
Ferromagnetic FeCo nanocrystals with high coercivity have been synthesized using a reductive decomposition method. The sizes and shapes of the nanocrystals were found to be dependent on reaction parameters such as the surfactant ratio, the precursor concentration and the heating
Surfactant-assisted low-temperature synthesis of monodispersed phase pure cubic CoO solid nanoparallelepipeds via thermal decomposition of cobalt (II) acetylacetonate
Purkayastha DD, et al.
Materials Letters, 107, 71-74 (2013)
Kosuke Suzuki et al.
Dalton transactions (Cambridge, England : 2003), 44(32), 14220-14226 (2015-05-23)
Structurally well-defined hetero-pentanuclear manganese-oxide clusters {MMn4} were successfully synthesized in TBA7Hn[MMn4(OH)2(A-α-SiW9O34)2]·2H2O·C2H4Cl2 (, M = Fe(iii), Co(ii), Ni(ii), Cu(ii), Ga(iii)) by sequential introduction of metal cations into the trivacant lacunary polyoxometalates (POMs). The pentanuclear manganese-oxide cluster {Mn5} showed a small spin
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