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   Argon is an inert gaseous element that is the third most prevalent gas in the earth’s atmosphere, composing slightly less than 1%. Argon is composed of monatomic molecules and is colourless, odourless, tasteless, non-corrosive, nonflammable and non-toxic. Argon melts at -189.3°C (-308.2°F) and boils at -185.86°C (-302.55°F). Its gaseous specific gravity is 1.38.

Commercial argon is the product of cryogenic air separation, where liquefaction and distillation processes are used to produce a low-purity "crude" argon product which is then purified into the commercial product.

Argon is primarily used for its properties as an inert gas in applications such as arc welding, steelmaking, in electric light bulbs and electronics manufacturing.

 

Hydrogen Argon Carbon Dioxide

 

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Last modified: August 27, 1998