| CAS No.: | 7440-37-1 |
|---|---|
| Formula: | Ar |
| EINECS: | 231-147-0 |
| Constituent: | Industrial Pure Air |
| Grade Standard: | Industrial Grade |
| Chemical Property: | Combustion-Supporting Gas |
| Customization: |
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Audited Supplier Argon gas is a chemical element with the symbol Ar and atomic number 18. It belongs to the group of noble gases, which also includes helium, neon, krypton, xenon, and radon. Argon is the third-most abundant gas in the Earth's atmosphere, making up about 0.934% of the air. It is colorless, odorless, and tasteless.
Here are some key characteristics and applications of argon gas:
Inertness: Argon is classified as an inert gas because it is non-reactive and does not readily form compounds with other elements. This property makes it useful in various applications where an inert atmosphere is required.
Industrial Uses: Argon has several industrial applications. It is commonly used as a shielding gas in welding processes, such as tungsten inert gas (TIG) welding and gas metal arc welding (GMAW). The inert atmosphere created by argon prevents oxidation and contamination of the welded metals.
Lighting: Argon is used in various types of lighting, including fluorescent lamps and gas discharge tubes. When an electric current passes through these devices, the argon gas emits a blue-violet glow.
Windows: Argon gas is sometimes used as an insulating agent in double-pane windows. The gas is sealed between the glass panes, reducing heat transfer and improving energy efficiency.
Scientific Research: Argon gas is often used in scientific research, particularly in fields like physics and chemistry. It can be used as a carrier gas in gas chromatography, as a blanketing gas in chemical reactions, and as a detector gas in certain analytical instruments.
Medical Applications: Argon gas has medical applications as well. It can be used in surgeries, such as laser eye surgery, to create a stable and inert environment. It is also used in cryotherapy, a medical procedure that involves freezing and destroying abnormal tissue.
Preservation: Argon gas is sometimes employed for preserving and protecting valuable items, such as historical documents, artwork, and artifacts. By creating an oxygen-free environment, argon gas helps prevent degradation and oxidation.
It's worth noting that while argon is generally considered safe, it can displace oxygen in enclosed spaces, leading to an oxygen-deficient atmosphere. Proper precautions should be taken when working with argon gas to ensure safety.
| Ar, Assay % | ≥99.9999 | 99.9999 | ||||||||
| H2, ppm | ≤0.1 | <0.1 | ||||||||
| O2, ppm | ≤0.15 | <0.1 | ||||||||
| N2, ppm | ≤0.2 | <0.2 | ||||||||
| CO, ppm | ≤0.1 | <0.05 | ||||||||
| CO2, ppm | ≤0.1 | <0.05 | ||||||||
| CH4, ppm | ≤0.1 | <0.05 | ||||||||
| H2O, ppm | ≤0.1 | <0.1 | ||||||||
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