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Hydrogen (High Purity Grade)

Diverse supply offers for many industries and applications

Hydrogen in smaller quantities

Air Liquide offers hydrogen as a pure specialty gas, available in our ALPHAGAZ™ line of pure gases in two grades. ALPHAGAZ™ 1 grade features 99.999% purity. ALPHAGAZ™ 2 grade features 99.9998% purity and is ultra-pure for critical laboratory and analytic applications.  is also available as a component in many CALGAZ™ brand gas mixtures for industrial hygiene and safety. Hydrogen in helium or nitrogen balances are also available as FID fuel gases for engine emissions testing applications in the automotive industry and meet Part 86 and 1065 requirements.

Gas Properties

Gas UN # Gas Volume* Gas per litre of Liquid DG CLASS
Hydrogen UN1049 11.73 m³ 0.833 m³ 2.1
* in Standard conditions, 15 °C and 1 atm (101.325 kPa) 

Did you know?

  • Hydrogen was discovered by Henry Cavendish in 1766.
  • It owes its name to Antoine Laurent de Lavoisier, who combined the Greek "hydor", "water", and "genen", "to engender".
  • Hydrogen is colorless, very light, and reacts easily with other chemical substances making it a very useful reactant for the chemical and oil industries.
  • Hydrogen is found in the atmosphere at trace levels.
  • In 1970, hydrogen fluxes have been detected in the oceans, resulting from serpentinisation of rocks but the exploitation seems unlikely due to extreme geological conditions.
  • More recently, natural hydrogen emissions from the ground have also been detected and are under investigation to understand the origin of this hydrogen.
  • Today natural gas or hydrocarbons as well as water are used as raw materials to produce hydrogen.
  • Moreover, hydrogen has a very high energy content (120 MJ/kg) while containing no carbon atom. This makes it a promising energy vector for the future. Associated to air or oxygen in a fuel cell, hydrogen is converted in electricity and heat, releasing only water. Driving an electric car over a long distance with no emission is a dream of many!

Discover more about hydrogen's properties, volumes, applications, safety & compatability and much more with Air Liquide's Gas Encyclopedia.

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