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Pure Gases
Hydrogen (H2)

Description:

Hydrogen is used in chemical synthesis to produce ammonia, methanol and other products. It is used in hydrogenation of edible oils and petroleum products. It is mixed with air to form the fuel gas for FID gas chromatography (usually Zero Grade) and is sometimes a carrier gas. Other uses are annealing and heat treating of metals.
 

Properties:

  Molecular Weight: 2.02
  Specific Volume: 192 CF/lb
  Flammable Limits: 4.0-75% in Air
  CGA Valve: 350, 3HP-703, 2HP-695
  DOT Name:
Hydrogen, Compressed
  UN No.: UN1049
  DOT Class: 2.1
  DOT Label: Flammable Gas
  CAS Registry: 1333-74-0