Chromium(III) acetylacetonate
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Chromium(III) acetylacetonate
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CAS No:
21679-31-2
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Formula:
C15H21CrO6
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Chemical Name:
Chromium(III) acetylacetonate
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Synonyms:
ACETYLACETONE CHROMIUM(+3);ACETYLACETONE, CHROMIUM(III) DERIVATIVE;ACETYLACETONE CHROMIUM(III) SALT;2,4-PENTANEDIONE CHROMIUM SALT;Chromium 2,4-pentanedionate, 97.5+%;CHROMIUM(III) AA;CHROMIUM(III) ACETYLACETONATE;CHROMIUM 2,4-PENTANEDIONATE
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CAS No:
Description
PURPLE CRYSTALLINE POWDER
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.
Moderately toxic by ingestion. Mildly toxic by s h contact. When heated to decomposition it emits acrid smoke and irritating fumes. See also CHROMIUM COMPOUNDS.
Purify it by dissolving 6g in hot *C6H6 (20mL) and adding 75mL of pet ether slowly. Cool to room temperature then chill on ice, filter off and dry in air to give 2.9g. It also crystallises from EtOH. It is soluble in heptane, *C6H6, toluene and pentane-2,4-dione at 20-40o. It forms a 1:2 complex with CHCl3. [Fernelius & Blanch Inorg Synth V 130 1957, Steinbach & Burns J Am Chem Soc 80 1839 1958, Beilstein 1 H 782, 1 II 836, 1 IV 3673.]
Chromium(III) acetylacetonate Basic Attributes
349.32
352.09800
4148971
244-526-0
TSCA listed
DTXSID0051863
Purple to maroon
29420000
Characteristics
102.42000
1.66350
dull purple powder.
1,35 g/cm3
210 °C(lit.)
340 °C(lit.)
>200ºC
11 g/L (20 ºC)
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from
0Pa at 20℃
LD50 orally in Rabbit: 3360 mg/kg LD50 dermal Rabbit 6350 mg/kg
Not classified
6 (1g/l, H2O, 20℃)
Store below +30°C.
Safety Information
NONH for all modes of transport
2
Xi
22-26-36-37/39
GB7575000
Xi
Stable at room temperature in closed containers under normal storage and handling conditions.
P261-P305 + P351 + P338
36/37/38
|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 63 companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Chromium(III) acetylacetonate Use and Manufacturing
Used in nmr spectroscopy as a relaxation agent.
Chromium(III) acetylacetonate is a useful research chemical.
Catalyst in the oxidation of methacrylic esters by hydrogen peroxide, MOCVDChromium(III) 2,4-pentanedionate is used in the reduction of detonation of nitromethane. It is also used in NMR spectroscopy as a relaxation agent due to its solubility in nonpolar organic solvents and its paramagnetism. Further, it is involved in the modification of the surface properties of solid polyurethanes.
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.
Chromium, tris(2,4-pentanedionato-.kappa.O2,.kappa.O4)-, (OC-6-11)-: ACTIVE
Computed Properties
Molecular Weight:349.32
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:349.074318
Monoisotopic Mass:349.074318
Topological Polar Surface Area:120
Heavy Atom Count:22
Complexity:90.4
Undefined Bond Stereocenter Count:3
Covalently-Bonded Unit Count:4
Compound Is Canonicalized:Yes
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