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Oxygen
Present in abundance in the nature, the oxygen represents in weight 21% of the air we breath.
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.
- etc.
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