Hydrogen is the smallest chemical element and much lighter than air. It is colour- and odourless and burns with a pale blue, nearly invisible flame resulting in the generation of water. Mixtures of hydrogen and oxygen are explosive (detonating gas). Hydrogen is widespread in many chemical compounds. It is part of water and organic hydrocarbons, the basic building blocks of life on earth. It is also a very important energy carrier and used in fuel cells. During chlor-alkali elektrolysis hydrogen generation is stoichiometrically linked to the generation of chlorine and caustic soda.

• Airships and captive Balloons
• Ammonia 
• Combustible and welding Gas
• Fat hardening
• Fuel cells
• Hydrogenation
• Metallurgy
• Storage of energy