Cobaltocene

Synonyms

Bis(cyclopentadienyl)cobalt; Cobalt, bis(eta5-2,4-cyclopentadien-1-yl)-; Dicyclopentadienylcobalt; Kobaltocen [Czech]; Cobalt, di-pi-cyclopentadienyl-; [ChemIDplus] Bis(cyclopentadienyl)cobalt(II); Bis(eta-cyclopentadienyl)cobalt; Bis(eta5-cyclopentadienyl)cobalt; Cobalt, dicyclopentadienyl-; Di-pi-cyclopentadienyl cobalt; [CAMEO] UN1325

Category

Organic Compounds, Metal Salts

Description

Black-purple or black solid; Insoluble in water; [CAMEO] Black-violet crystals; [Acros Organics MSDS]

Sources/Uses

Used to catalyze synthesis of pyridines from alkynes and nitriles, as a polymerization inhibitor of olefins, in Diels-Alder reactions, as a paint drier, and as an oxygen stripping agent; [NTP]

Comments

Intraperitoneal LD50 (mouse) = 80 mg/kg; [RTECS] A strong reducing agent; Readily oxidized by air and water; Sensitive to air and light exposure; [CAMEO] Highly reactive; Toxic by ingestion; [NTP] An irritant; Ingestion may cause CNS depression; [Acros Organics MSDS] See "Cobalt."

Biomedical References

Cobalt in urine = 15 ug/L; sample at end of shift at end of workweek;

0.02 mg/m3, as Co

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Flammable solid, n.o.s."

Processes

Industrial Processes with risk of exposure:

• Painting (Pigments, Binders, and Biocides)