According to ADR, Helium compressed gas has the UN No.1046 and belongs to the compressed asphyxiating gases, code IA. Compressed helium is delivered in steel cylinders coated with brown paint and is regulated by the rules for the transport of dangerous goods. Liquid helium is transported in special Dewar vessels STG10, STG25, coated with light gray paint of various capacities.

Has atomic number 2. It has the designation He, is present almost everywhere in space, occupies the second line after H in terms of distribution, and the same place in terms of lightness. It has the lowest boiling point. The elementary substance He is non-toxic, does not smell or taste, and is colorless. In a standard setting, it has a gaseous consistency. Helium gas is industrially extracted from natural gas. Liquid helium is isolated by the method of liquefaction at a low temperature.

In the metallurgical industry, as a shielding helium gas during the melting of metals without impurities to saturate atmospheric balloons and balloons in breathing mixtures to saturate gas discharge pipes.