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Chromium(III) acetylacetonate

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Chromium(III) acetylacetonate

EINECS 244-526-0
CAS No. 21679-31-2 Density 1,35 g/cm3
Solubility 11 g/L (20 °C) in water Melting Point 212 °C(lit.)
Formula C15H21CrO6 Boiling Point 340 °C
Molecular Weight 349.32 Flash Point >200ºC
Transport Information Appearance Purple crystalline powder
Safety 22-26-36-37/39 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 21679-31-2 (Chromium,tris(2,4-pentanedionato-kO2,kO4)-, (OC-6-11)-) Hazard Symbols IrritantXi

Chromium,tris(2,4-pentanedionato)- (6CI,7CI,8CI);Chromium,tris(2,4-pentanedionato-O,O')-, (OC-6-11)-;Chromium, tris(2,4-pentanedionato-kO,kO')-, (OC-6-11)- (9CI);Chromic acetylacetonate;Chromium acetylacetonate;Chromium triacetylacetonate;Chromiumtris(2,4-pentanedionate);Chromium tris(acetylacetonate);Chromium(3+)acetylacetonate;Chromium(III) acetylacetonate;NSC 4654;NSC 52331;Tris(2,4-pentanedionato)chromium;Tris(2,4-pentanedionato-k2O,O')chromium(III);Tris(acetylacetonato)chromium;Tris(acetylacetonato)chromium(III);Tris(acetylacetonyl)aluminum chromium(III);


Chromium(III) acetylacetonate Chemical Properties

IUPAC Name: Chromic (Z)-4-oxopent-2-en-2-olate
CAS: 21679-31-2
EINECS: 244-526-0
Product Categories: Pharmaceutical Intermediates ; Organometallics ; Catalysts for Organic Synthesis ; Classes of Metal Compounds ; Cr (Chromium) Compounds ; Homogeneous Catalysts ; Metal Complexes ; Synthetic Organic Chemistry ; Transition Metal Compounds .
Following is the Molecular Structure of Tris(2,4-pentanedionato)chromium (21679-31-2):

Molecular Formula: C15H21CrO6
Molecular Weight: 349.32
Melting Point: 210℃(lit.)
Boiling Point: 187.6℃ at 760mmHg
Flash Point: 71.9℃
Density: 1.35 g/cm3
Enthalpy of Vaporization: 49.32kJ/mol
Vapour Pressure: 0.174mmHg at 25℃

Chromium(III) acetylacetonate Uses

 Tris(2,4-pentanedionato)chromium (21679-31-2) can be used in NMR spectroscopy as a relaxation agent.

Chromium(III) acetylacetonate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin 6350mg/kg (6350mg/kg)   Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.
rat LD50 oral 3360mg/kg (3360mg/kg)   Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.

Chromium(III) acetylacetonate Consensus Reports

Chromium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Chromium(III) acetylacetonate Safety Profile

Hazard Codes:  Xi Irritant.
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 22-26-36-37/39
S22: Do not breathe dust.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
S37/39: Wear suitable gloves and eye/face protection.
WGK: Germany 2
RTECS: GB7575000
HS Code: 29420000
Moderately toxic by ingestion. Mildly toxic by skin contact.

Chromium(III) acetylacetonate Standards and Recommendations

OSHA PEL: TWA 0.5 mg(Cr)/m3
ACGIH TLV: TWA 0.5 mg(Cr)/m3; Not Classifiable as a Carcinogen

Chromium(III) acetylacetonate Specification

 Tris(2,4-pentanedionato)chromium (21679-31-2) also can be called for Acetylacetone chromium(+3) ; Acetylacetone,chromium(III) derivative ; Acetylacetone chromium(III) salt ; 2,4-Pentanedione chromium salt ; Chromium(III) aa ; Chromium(III) 2,4-Pentanedionate ; Chromium(III) acetylacetonate ; Chromium 2,4-pentanedionate . Tris(2,4-pentanedionato)chromium (21679-31-2) is a purple crystalline powder.When heated to decomposition it emits acrid smoke and irritating fumes.It's stable at room temperature in closed containers under normal storage and handling conditions.

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