Melting point :-22 °C
Boiling point :139-140 °C710 mm Hg(lit.)
Density :1.35
refractive index :1.599-1.602
Flash point :80 °F
storage temp. :2-8°C
form :liquid
color :dark red
Specific Gravity :1.35
Water Solubility :Insoluble in water. Soluble in common organic solvents.
Sensitive :Air Sensitive
InChI :InChI=1S/C5H5.2CO.Co/c1-2-4-5-3-1;2*1-2;/h1-5H;;;
InChIKey :HUSLGLMTBHLWKG-UHFFFAOYSA-N
SMILES :[CH]1[CH][CH][CH][CH]1.[O+]#[C-].[O+]#[C-].[Co] |^1:0,1,2,3,4|
NIST Chemistry Reference :Cobalt, dicarbonyl(«eta»5-2,4-cyclopentadien-1-yl)-(12078-25-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.