# NIOSH Pocket Guide to Chemical Hazards
Cobalt carbonyl (as Co) | CAS 10210-68-1
C8Co2O8 | RTECS GG0300000
Synonyms & Trade Names di-mu-Carbonylhexacarbonyldicobalt, Cobalt octacarbonyl, Cobalt tetracarbonyl dimer, Dicobalt carbonyl, Dicobalt Octacarbonyl, Octacarbonyldicobalt | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.1 mg/m3
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Orange to dark-brown, crystalline solid. [Note: The pure substance is white.]
MW: 341.9 | BP: 126°F (Decomposes) | MLT: 124°F | Sol: Insoluble
VP: 0.7 mmHg | IP: ? |  | Sp.Gr: 1.87
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid, but flammable carbon monoxide is emitted during decomposition.
Incompatibilities & Reactivities Air [Note: Decomposes on exposure to air or heat; stable in atmosphere of hydrogen & carbon monoxide.]
Measurement Methods None available
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, mucous membrane; cough, decreased pulmonary function, wheezing, dyspnea (breathing difficulty); in animals: liver, kidney injury, pulmonary edema
Target Organs Eyes, skin, respiratory system, blood, central nervous system
See also: INTRODUCTION