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574082

Sigma-Aldrich

Chromium(III) acetylacetonate

99.99% trace metals basis

Synonym(s):

Chromium(III) 2,4-pentanedionate, Cr(acac)3

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About This Item

Linear Formula:
Cr(C5H7O2)3
CAS Number:
Molecular Weight:
349.32
Beilstein:
4148971
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23

Assay

99.99% trace metals basis

form

solid

reaction suitability

core: chromium

bp

340 °C (lit.)

mp

210 °C (lit.)

SMILES string

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

InChI

1S/3C5H8O2.Cr/c3*1-4(6)3-5(2)7;/h3*3,6H,1-2H3;/q;;;+3/p-3/b3*4-3-;

InChI key

JWORPXLMBPOPPU-LNTINUHCSA-K

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General description

Chromium(III) acetylacetonate is an acidopentamminechromium (111) salt, which is a crystalline material that can be prepared by treatment of precipitated hydrous chromium(III) oxide with acetylacetone.[1]

Application

Chromium(III) acetylacetonate may be used as an active site in the formation of redox systems for the fabrication of flow batteries.[2] It may also be used as a precursor for chromium nitride based metallic coatings.[3]

Analysis Note

Used to modify the surface properties of solid polyurethanes formed in its presence.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

>392.0 °F

Flash Point(C)

> 200 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Chromium (III) acetylacetonate
Fernelius WC, et al.
Inorganic Syntheses, 5, 130-131 (1957)
Plasma assisted metal-organic chemical vapor deposition of hard chromium nitride thin film coatings using chromium (III) acetylacetonate as the precursor
Dasgupta A, et al.
Materials Science & Engineering. A, Structural Materials : Properties, Microstructure and Processing, 374(1-2), 362-368 (2004)
Non-aqueous chromium acetylacetonate electrolyte for redox flow batteries
Liu Q, et al.
Electrochemical Communications, 12(11), 1634-1637 (2010)
Yanfang Li et al.
Dalton transactions (Cambridge, England : 2003), 41(13), 3807-3816 (2012-02-24)
Biscyclometalated iridium(III) complexes with an ancillary acetylacetone ligand, Ir(L)(2)(acac), (L = 2-(benzo[b]thiophen-2-yl)pyridine (btp), 1-phenylisoquinoline (piq), 2-phenylbenzothiazole (bt), 2-phenylpyridine (ppy), acac = deprotonated acetylacetone), demonstrate spectroscopic changes in their UV-Vis absorption and luminescent emission under acidic conditions. Such changes were found
David N Paglia et al.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 30(12), 1971-1978 (2012-06-02)
This study quantified the effects of local intramedullary delivery of an organic vanadium salt, which may act as an insulin-mimetic on fracture healing. Using a BB Wistar rat femoral fracture model, local vanadyl acetylacetonate (VAC) was delivered to the fracture

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