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Name	Cobaltocene	EINECS	215-061-0
CAS No.	1277-43-6	Density	g/cm³
PSA	0.00000	LogP	2.04300
Solubility	Stability Stable, but very reactive and air and moisture sensitive - store under inert gas. Incompatible with strong oxidizingagents. Highly flammable. Toxicology May act as a skin, eye or respiratory irr	Melting Point	176-180 °C (dec.)(lit.)
Formula	C10H10 Co	Boiling Point	41.5 °C at 760 mmHg
Molecular Weight	189.183	Flash Point	°C
Transport Information	UN 1325 4	Appearance	dark violet crystals
Safety	Poison by intraperitoneal route. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes. See also COBALT.	Risk Codes	11
Molecular Structure		Hazard Symbols	Toxic by ingestion.
Synonyms	Cobalt, di-p-cyclopentadienyl- (8CI);Cobalt,dicyclopentadienyl- (6CI);Bis(cyclopentadienyl)cobalt;Bis(cyclopentadienyl)cobalt(II);Bis(h-cyclopentadienyl)cobalt;Bis(h5-cyclopentadienyl)cobalt;Cobalt, bis(h5-2,4-cyclopentadien-1-yl)-;Dicyclopentadienylcobalt;NSC 62690;	Article Data	65

Cobaltocene Chemical Properties

Bis(cyclopentadienyl)cobalt ,its CAS register number is 1277-43-6 ,it's called for Dicyclopentadienylcobalt ; Bis(cyclopentadienyl)cobalt ; CCRIS 6001 ; Cobalt, di-pi-cyclopentadienyl- ; NSC 62690 ; EINECS 215-061-0 ; CID92884 ; Di-pi-cyclopentadienyl-cobal ; Kobaltocen ,and so on. Bis(cyclopentadienyl)cobalt (CAS No.1277-43-6) is usually black-purple crystals or black solid.

IUPAC Name: Cobalt(2+) ; Cyclopenta-1,3-diene
CAS: 1277-43-6
Molecular Formula: C₁₀H₁₀Co
Molecular Weight: 189.12
Molecular structure:
EINECS: 215-061-0
ACD/LogD (pH 5.5): 1.79
ACD/LogD (pH 7.4): 1.79
ACD/BCF (pH 5.5): 13.44
ACD/BCF (pH 7.4): 13.44
ACD/KOC (pH 5.5): 223.49
ACD/KOC (pH 7.4): 223.49
H bond acceptors: 0
H bond donors: 0
Freely Rotating Bonds: 0
Enthalpy of Vaporization: 27.4 kJ/mol
Boiling Point: 41.5 °C at 760 mmHg
Vapour Pressure: 418 mmHg at 25°C
Melting point: 176-180 °C (dec.)(lit.)
Storage temp.: 0-6°C
Sensitive: Air & Moisture Sensitive

Cobaltocene Uses

Bis(cyclopentadienyl)cobalt (CAS No.1277-43-6) is commonly used as organic reagent.

Cobaltocene Toxicity Data With Reference

1.	mmo-sat 3333 µg/plate	EMMUEG Environmental and Molecular Mutagenesis. 19 (Suppl 21)(1992),2.
2.	ipr-rat LD50:55 mg/kg	NCIUS* Progress Report for Contract No. PH-43-64-886, Submitted to the National Cancer Institute by the Institute of Chemical Biology, University of San Francisco. (San Francisco, CA 94117) PH 43-64-886,JAN,65 .
3.	ipr-mus LD50:80 mg/kg	NCIUS* Progress Report for Contract No. PH-43-64-886, Submitted to the National Cancer Institute by the Institute of Chemical Biology, University of San Francisco. (San Francisco, CA 94117) PH 43-64-886,JAN,65 .

RTECS: GG0350000

Cobaltocene Consensus Reports

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

Cobaltocene Safety Profile

Poison by intraperitoneal route. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes.

Hazard Codes: F
Risk Statements: 11 (R11:Highly flammable.)
Safety Statements: 16-33-7/9 (R16:Explosive when mixed with oxidizing substances. R33:Danger of cumulative effects. S7/9: Keep container tightly closed and in a well-ventilated place)
RIDADR: UN 1325 4.1/PG 3
WGK Germany: 3
HazardClass: 4.1
PackingGroup: II

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Cobaltocene