Oxygen  [ Return to  Standard gases  ]

It also represents in weight 46% of the earth's crust (in the form of oxides, of silicates, etc.), 89% of the water present on Earth (under molecular state), and 62% of the human body (under molecular state).

Colorless, odorless and tasteless gas, it is essential in the life and reacts strongly in the presence of numerous chemical substances:

• in combination with other molecules to manufacture plastics;
• oxygenation of fish-farming basins;
• sustainable glass melting;
• in combination with fuel gas for welding and cutting;
• in combination with a fuel gas for welding and cutting;
• stimulation of some installations and valuation of wastes (for the production of chemical specialties and electrical energy);
• ecological bleaching of the paper pulp;
• cryogenic combustive for rocket's engines;
• decarburization of cast iron to produce steel and to enrich the air of blast furnaces;
• biological purification of the water;
• the clean incineration of wastes.