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Argon is difficult to detect due to its colorless and odorless nature, but, as mentioned in the description, argon is 38% denser than air and is therefore considered a dangerous asphyxiant in closed areas. Please read the MSDS below for more information.
Argon is used in various types of arc welding such as gas metal arc welding and gas tungsten arc welding, as well as in the processing of titanium and other reactive elements.
Argon is used as the carrier gas in gas chromatography and it is the gas of choice for the plasma used in ICP spectroscopy. It is commonly used for the sputter coating of specimens for scanning electron microscopy. Argon gas is also commonly used for sputter deposition of thin films as in microelectronics and for wafer cleaning in micro-fabrication.
Incandescent lights are filled with argon, to preserve the filaments at high temperature from oxidation. Bulbs filled with pure argon provide a violet light, but when they are filled with argon and some mercury a blue light is produced. Argon is also used for the creation of blue and green laser light.
Argon is a Noble Gas, meaning the gas does not undergo many chemical reactions, and is the third most abundant gas in the atmosphere. It is produced industrially by air separation plants. Argon is colorless, odorless, nonflammable and nontoxic as a gas, liquid, and solid. The main use of Argon is as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily non-reactive substances become reactive. Argon makes a distinctive blue-green gas laser used for research and medical purposes. Although argon is non-toxic, it is 38% denser than air and is therefore considered a dangerous asphyxiant in closed areas.