Chromium(III) acetylacetonate

Chromium(III) acetylacetonate Basic information
Uses
Product Name:Chromium(III) acetylacetonate
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) 2,4-PENTANEDIONATE;CHROMIUM(III) ACETYLACETONATE
CAS:21679-31-2
MF:C15H21CrO6
MW:349.32
EINECS:244-526-0
Product Categories:metal beta-diketonate complexes;Pharmaceutical Intermediates;Organometallics;Catalysts for Organic Synthesis;Classes of Metal Compounds;Cr (Chromium) Compounds;Homogeneous Catalysts;Metal Complexes;Synthetic Organic Chemistry;Transition Metal Compounds
Mol File:21679-31-2.mol
Chromium(III) acetylacetonate Structure
Chromium(III) acetylacetonate Chemical Properties
Melting point 210 °C(lit.)
Boiling point 340 °C(lit.)
density 1,35 g/cm3
vapor pressure 0Pa at 20℃
Fp >200°C
storage temp. Store below +30°C.
solubility 11g/l
form Crystalline Powder, Crystals, and/or Chunks
Specific Gravity1.35
color Purple to maroon
PH6 (1g/l, H2O, 20℃)
Water Solubility 11 g/L (20 ºC)
Hydrolytic Sensitivity1: no significant reaction with aqueous systems
BRN 4148971
Exposure limitsNIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3
LogP0.4 at 20℃
NIST Chemistry ReferenceChromium, tris(2,4-pentanedionato-o,o')-(21679-31-2)
EPA Substance Registry SystemChromium(III) acetylacetonate (21679-31-2)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 22-26-36-37/39
WGK Germany 2
RTECS GB7575000
TSCA Yes
HS Code 29420000
ToxicityLD50 orally in Rabbit: 3360 mg/kg LD50 dermal Rabbit 6350 mg/kg
MSDS Information
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Chromium(III) 2,4-pentanedionate English
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Chromium(III) acetylacetonate Usage And Synthesis
UsesChromium(III) acetylacetonate is a useful research chemical.
Chemical PropertiesPURPLE CRYSTALLINE POWDER
UsesCatalyst 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.
UsesChromium(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.
General DescriptionChromium(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.
Flammability and ExplosibilityNotclassified
Safety ProfileModerately toxic by ingestion. Mildly toxic by s h contact. When heated to decomposition it emits acrid smoke and irritating fumes. See also CHROMIUM COMPOUNDS.
Purification MethodsPurify 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 Preparation Products And Raw materials
Bis(acetylacetonato)cobalt Aluminum acetylacetonate VANADIUM(III) ACETYLACETONATE Vanadyl acetylacetonate Acetylacetone titanium (Ⅳ) acetylacetonate Tris(2,4-pentanedionato)chroMiuM(III) Manganic acetylacetonate ZIRCONIUM(IV) ACETYLACETONATE Ferric acetylacetonate COPPER(II) DIAMMONIUM CHLORIDE DIHYDRATE CHROMIUM (III) HEXAFLUOROACETYLACETONATE Chromium(III) acetylacetonate Potassium chromate 1,1,1-Trifluoro-2,4-pentanedione ACETYLACETONATE Chromium Chromium copper

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