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Carbon Monoxide

A colorless, odorless, toxic, flammable gas.

Chemical Symbol: CO
CAS Registry Number: 630-08-0
DOT Class: 2.3
DOT Label: Poison Gas, Flammable Gas
UN Number: UN 1016

 

  U.S. Units SI Units
Chemical formula CO CO
Molecular weight 28.01 28.01
Specific volume   13.7 ft3/lb
Flammability limits  12.5 - 74% in Air


 
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