A colorless, odorless, nonreactive, inert gas which is compressed to high pressures. It acts as a simple asphyxiant by displacing air. Argon belongs to the family of inert rare gases of the atmosphere. It is extremely inert and forms no known chemical compounds.
Argon is extensively used in filling incandescent and fluorescent lamps and electronic tubes; as an inert gas shield for arc welding and cutting; as a blanket in the production of titanium, zirconium and other reactive metals; to flush molten metals to eliminate porosity in castings; and to provide a protective shield for growin silicon and germanium crystals.
Argon is recovered from plants producing oxygen and nitrogen. These plants liquefy air which goes under a distillation process to remove oxygen, nitrogen, argon, and some of the other rare gases.
Gaseous argon is commonly stored in high pressure cylinders, tubes, or tube trailers. Liquid argon is commonly stored at the consumer site in cryogenic liquid cylinders and specially designed vacuum insulated storage vessels.