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Hydrogen

A colorless, odorless, flammable gas.

Chemical Symbol: H2
CAS Registry Number: 1333-74-0
DOT Class: 2.1
DOT Label: Flammable Gas
UN Number: UN 1049

 

  U.S. Units SI Units
Chemical formula H2 H2
Molecular weight 2.02 2.02
Specific volume 192 ft3/lb
Flammability limits  4.0 - 75% in Air


 
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