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Gazy techniczne - hel


For inerting, cooling and welding

CAS Number: 7440-59-7
UN1046 (gas); UN1963 (liquid refrigerated)

Helium is used for leak detection, cooling of superconducting magnets, balloon inflation. It's also used as a shielding gas for welding and as a component of the special mixtures used in CO2 lasers.

Helium is the most commonly gas used as carrier in gas chromatography.

Gas properties

Please consult Air Liquide's Gas Encyclopedia, available in English and French, allowing users to quickly access a host of information on the physical and chemical properties of gas molecules, indicating the material compatibilities of various gases and describing their main industrial applications.


You would like to increase your productivity, simplify the management of your gas supplies and improve the yield of your process or production sites. At the same time, you have to meet higher safety standards in order to conform to regulations and address environmental demands. Air Liquide has a full spectrum of services to meet your needs.