cobaltocene

Description

cobaltocene · CAS 1277-43-6 · C10H10Co. UNII 4W7LGU89CV. Melting Point: 343 to 345 °F (NTP, 1992).

Identification

CAS Registry Number	1277-43-6
PubChem CID	92884
Molecular formula	C10H10Co
IUPAC name	cobalt(2+);bis(cyclopenta-1,3-diene)
UNII (FDA)	4W7LGU89CV

Computed Descriptors

Molecular Weight	189.12
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	189.011444
Monoisotopic Mass	189.011444
Topological Polar Surface Area	0
Heavy Atom Count	11
Formal Charge	0
Complexity	11.6

Physical & Chemical Properties

Melting Point	343 to 345 °F (NTP, 1992)

Physical description & handling notes

• Cobaltocene appears as black-purple crystals or black solid. Sublimes at 104 °F and 0.1 mmHg. (NTP, 1992)
• Black-purple or black solid; Insoluble in water; [CAMEO] Black-violet crystals; [Acros Organics MSDS]
• less than 1 mg/mL at 70.7 °F (NTP, 1992)

GHS Hazard Classification

Reported hazard statements	H228 (100%), H317 (29.5%), H334 (26.8%), H341 (29.5%), H351 (26.8%)

Documented 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]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Cobalt is absorbed though the lungs, gastrointestinal tract, and skin. Since it is a component of the vitamin B12 (cyanocobalamin), it is distributed to most tissues of the body. It is transported in the blood, often bound to albumin, with the highest levels being found in the liver and kidney. Cobalt is excreted mainly in the urine and faeces. (L29)

Synonyms

Cobaltocene; 1277-43-6; Bis(cyclopentadienyl)cobalt; MFCD00013749; 4W7LGU89CV; DTXSID0024840; Cobalt, bis(eta5-2,4-cyclopentadien-1-yl)-; Kobaltocen [Czech]; NSC 62690; CCRIS 6001; EINECS 215-061-0; UNII-4W7LGU89CV; C10H10Co; Cobalt, di-pi-cyclopentadienyl-; SCHEMBL236827; cobaltous;cyclopenta-1,3-diene

Frequently Asked Questions

What are the CAS number and molecular formula of cobaltocene?

CAS 1277-43-6; molecular formula C10H10Co; molecular weight — g/mol.

What other names is cobaltocene known by?

Cobaltocene, 1277-43-6, Bis(cyclopentadienyl)cobalt, MFCD00013749, 4W7LGU89CV, DTXSID0024840.

Is cobaltocene classified as hazardous?

Hazard statements reported: H228, H317, H334, H341, H351.

What are the key physical properties of cobaltocene?

Melting Point: 343 to 345 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.