Chinese name argon (high purity)

English name Argon

CAS7440-37-1

Liquid argon - use

High purity argon is used as a protective gas for the production of high purity silicon and germanium crystals in the semiconductor industry; It can be used as inert gas for system cleaning, shielding and pressurization; It has been applied in chemical vapor deposition, sputtering and annealing. High-purity argon can be used as the carrier gas of color spectrum, and also as the dilution gas of mixed gas in large-scale integrated circuits. Argon is widely used to fill arc lamps, fluorescent lamps and electronic tubes; Welding shielding gas; Used as shielding gas in the production of titanium, cobalt and other active metals; In ferrous metallurgy, argon is used for converting special steel to improve the quality of steel. In particular, a large amount of argon is consumed in the manufacture of stainless steel.

Liquid argon - safety

It is non-toxic and an asphyxiating gas. At high concentration, it will cause asphyxia due to the reduction of oxygen partial pressure. The argon concentration will reach more than 50%, causing serious symptoms; More than 75% can die within a few minutes. When the concentration of argon in the air increases, the respiratory acceleration occurs first, and the concentration is not concentrated, leading to death. Avoid high concentration inhalation. The operation in tanks, confined spaces or other high concentration areas must be supervised. Liquid argon can cause skin frostbite; Eye contact can cause inflammation. Store in a cool and ventilated warehouse. Keep away from kindling and heat sources. The storage temperature should not exceed 30 ℃. It shall be stored separately from combustible (combustible) materials and shall not be mixed.