BIS(CYCLOPENTADIENYL)COBALT Property

Melting point:

176-180 °C (dec.)(lit.)

Boiling point:

173℃ [CRC10]

storage temp. 

2-8°C

form 

crystal

color 

purplish-black

Water Solubility 

Insoluble in water.

Sensitive 

Air & Moisture Sensitive

Stability:

Stable, but very reactive and air and moisture sensitive - store under inert gas. Incompatible with strong oxidizing agents. Highly flammable.

CAS DataBase Reference

1277-43-6(CAS DataBase Reference)

EPA Substance Registry System

Cobaltocene (1277-43-6)

Safety

Hazard Codes 

F,Xn

Risk Statements 

11-68-42/43-40

Safety Statements 

16-33-7/9-36/37-22

RIDADR 

UN 1325 4.1/PG 3

WGK Germany 

3

RTECS 

GG0350000

TSCA 

Yes

HazardClass 

4.1

PackingGroup 

II

HS Code 

29319090

Toxicity

mmo-sat 3333 mg/plate EMMUEG 19(Suppl 21),2,92

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H228Flammable solid

H317May cause an allergic skin reaction

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H341Suspected of causing genetic defects

H351Suspected of causing cancer

Precautionary statements

P201Obtain special instructions before use.

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P308+P313IF exposed or concerned: Get medical advice/attention.

BIS(CYCLOPENTADIENYL)COBALT Chemical Properties,Usage,Production

Chemical Properties

dark violet crystals

Uses

Polymerization inhibitor of olefins up to 200C, Diels–Alder reaction, catalyst, paint drier, oxygen stripping agent.

Uses

Bis(cyclopentadienyl)cobalt is used to catalyze the preparation of pyridines from alkynes and nitriles. It acts as a polymerization inhibitor of olefins. It is a common one-electron reducing agent in the laboratory. It reacts with carbon monoxide to prepare cobalt(I) derivative, cyclopentadienylcobalt dicarbonyl. It also serves as an internal standard in cyclic voltametry. Further, it finds use in Diels-Alder reactions. In addition to this, it is used as a paint drier and as an oxygen stripping agent.

Definition

A metallocene.

General Description

Black-purple crystals or black solid. Sublimes at 104°F and 0.1 mm Hg.

Air & Water Reactions

Air-sensitive. Highly flammable. Insoluble in water.

Reactivity Profile

BIS(CYCLOPENTADIENYL)COBALT is very sensitive to air and is readily oxidized. BIS(CYCLOPENTADIENYL)COBALT is also sensitive to exposure to light. Readily oxidized by water and dilute acids .

Hazard

Toxic by ingestion.

Health Hazard

ACUTE/CHRONIC HAZARDS: BIS(CYCLOPENTADIENYL)COBALT is toxic by ingestion.

Fire Hazard

Vendor information indicates that BIS(CYCLOPENTADIENYL)COBALT is flammable.

Safety Profile

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