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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:
21679-31-2
Molecular Weight:
349.32
Beilstein/REAXYS Number:
4148971
EC Number:
244-526-0
MDL number:
MFCD00000015
UNSPSC Code:
12352300
PubChem Substance ID:
24880706
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.

Application

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

Analysis Note

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

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

>392.0 °F

flash_point_c

> 200 °C

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Chromium (III) acetylacetonate
Fernelius WC, et al.
Inorganic Syntheses, 5, 130-131 (1957)
Non-aqueous chromium acetylacetonate electrolyte for redox flow batteries
Liu Q, et al.
Electrochemical Communications, 12(11), 1634-1637 (2010)
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)
Chiara Allegretti et al.
Molecules (Basel, Switzerland), 25(12) (2020-06-27)
Technical lignins, typically obtained from the biorefining of lignocellulosic raw materials, represent a highly abundant natural aromatic feedstock with high potential in a sustainable economy scenario, especially considering the huge primary production volumes and the inherently renewable nature of this
Zhan'ao Tan et al.
Physical chemistry chemical physics : PCCP, 14(42), 14589-14595 (2012-09-28)
A solution-processed vanadium oxide (s-VO(x)) anode buffer layer on an indium-tin-oxide (ITO) electrode was used instead of PEDOT:PSS for improving the stability and photovoltaic performance of the polymer solar cells (PSCs). The s-VO(x) layer was prepared by spin-coating a vanadyl
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