21679-31-2 Usage
Uses
Different sources of media describe the Uses of 21679-31-2 differently. You can refer to the following data:
1. Chromium(III) acetylacetonate is a useful research chemical.
2. 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.
3. 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.
Chemical Properties
PURPLE CRYSTALLINE POWDER
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.
Flammability and Explosibility
Notclassified
Safety Profile
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.
Purification Methods
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.]
Check Digit Verification of cas no
The CAS Registry Mumber 21679-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,7 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21679-31:
(7*2)+(6*1)+(5*6)+(4*7)+(3*9)+(2*3)+(1*1)=112
112 % 10 = 2
So 21679-31-2 is a valid CAS Registry Number.
InChI:InChI=1/3C5H7O2.Cr/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3
