Industrial Gases - Air
Air is the gaseous mixture that surrounds the earth. Its composition varies with the altitude at which the sample is taken, but at sea level air contains approximately 78% nitrogen and 21% oxygen by volume, with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases. Air is colorless, odorless, tasteless and non-toxic. It is also non-flammable but supports combustion.
Usage
- Agricultural fertilizer.
- Refrigerant for the food industry, industrial refrigerators, and freezers.
- Non-aqueous solvent.
- Manufacture of chemicals.
- Production of dyes, drugs and plastics.
- Cleansing agent.
- Various metallurgical processes.