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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:
21679-31-2
Molecular Weight:
349.32
Beilstein:
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.[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
GHS07

Signal Word

Warning

Hazard Statements

H315,H319

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCN1140
MKCL7680
MKCK3604
MKCG6103
MKCD0833

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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)
Gui-Ge Hou et al.
Chemical communications (Cambridge, England), 47(38), 10731-10733 (2011-08-27)
Two NbO-type MOFs based on ditopic pyridyl substituted diketonate ligands were reported. One exhibits a reversible SC-SC water encapsulation, while the other shows an interesting guest-driven luminescent property based on M(III) acetylacetonate (M = Eu and Fe) guest species.
Chih-Chia Huang et al.
Chemical communications (Cambridge, England), (23)(23), 3360-3362 (2009-06-09)
A general approach involving a solvothermal method was developed to synthesize a series of silicate nanoshells (<100 nm) where both Gd silicate and Gd silicate:Eu nanoshells were further demonstrated to exhibit dual-modality MRI and optical imaging functions.
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