| 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 colorless, odorless, and non-reactive noble gas that belongs to the group of elements known as the noble gases. It is denoted by the chemical symbol Ar and has an atomic number of 18. Argon is the third most abundant gas in the Earth's atmosphere, making up about 0.93% of the air.
Argon is obtained through air separation processes, primarily by fractional distillation of liquid air. It is used in various applications due to its inert nature and unique properties. Some common uses of argon gas include:
Welding: Argon is commonly used as a shielding gas in welding processes, such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). It helps protect the weld area from atmospheric contamination and ensures a stable arc.
Lighting: Argon is used in various types of lighting, including fluorescent lamps, sodium vapor lamps, and some high-intensity discharge (HID) lamps. The gas helps maintain the electrical discharge and stabilizes the light output.
Electronics: Argon is used in the production of semiconductors and other electronic devices. It is often employed in the manufacturing process to create an inert atmosphere that prevents oxidation and contamination.
Scientific research: Argon is used as a carrier gas in gas chromatography and as a detector gas in mass spectrometry. It is also utilized in various analytical techniques, such as atomic absorption spectroscopy and gas-phase titrations.
Medical applications: Argon gas is sometimes used in medical procedures, such as cryosurgery and laser treatments. In cryosurgery, argon is used to freeze and destroy abnormal tissue, while in lasers, it acts as a lasing medium for certain types of lasers.
These are just a few examples of the many applications of argon gas. Its inertness, thermal conductivity, and other properties make it useful in a wide range of industries and scientific fields.
| 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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