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Hydrogen - Industrial and Specialty Gases


Airgas is the United States' largest distributor of industrial, medical, and specialty gases and related equipment, safety supplies, welding supplies and MRO products and services to industrial and commercial markets.

What are the uses of Hydrogen?


Hydrogen (H2) is a flammable, colorless, odorless, compressed gas at high pressure. 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 of Hydrogen:


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

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