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Merck
CN

574082

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
UNSPSC Code:
12352300
NACRES:
NA.23
PubChem Substance ID:
24880706
EC Number:
244-526-0
Beilstein/REAXYS Number:
4148971
MDL number:
MFCD00000015

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InChI key

JWORPXLMBPOPPU-LNTINUHCSA-K

InChI

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

SMILES string

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

assay

99.99% trace metals basis

form

solid

reaction suitability

core: chromium

bp

340 °C (lit.)

mp

210 °C (lit.)

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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

WGK 2

flash_point_f

>392.0 °F

flash_point_c

> 200 °C

ppe

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)
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)
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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