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Argon, Ar Rare Gas

CAS NO  7440-37-1
UN NO  1004
EINECS NO  231-147-0
Molecular weight  39.948
Appearance  Colorless, odorless
Melting point  -189.2 ℃
Boiling point  -185.9 ℃
Density  1.784kg/m³
DOT Class  2.2
Label  Non-flammable Gas


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Argon is a colorless, odorless, monatomic gas that is 1.4 times denser than air, or 10 times as dense as gas. Argon is a kind of amorous gas, at room temperature and other substances do not react chemically, at high temperature is not soluble in liquid metal, in the welding of non-ferrous metal can show its superiority. It can be used for bulb aeration and arc welding of stainless steel, magnesium, aluminum, etc. that is “argon welding”.


Also used in semiconductor manufacturing process chemical vapor deposition, crystal growth, thermal oxidation, epitaxy, diffusion, polysilicon, tungstate, ion implantation, current carrier, sintering, etc.

Oxygen is used in the glass industry, and high-purity oxygen is used in electronics manufacturing.

Argon gas is mainly used in welding, stainless steel manufacturing, smelting.

Industrial Grade

Hydrogen≤ 0.5 ppm
Oxygen≤ 1.5 ppm
Moisture≤ 3.0 ppm
Methane + Carbon Monoxide + Carbon Dioxide≤ 1.0 ppm
Nitrogen≤ 4.0 ppm
Other Grades and Purity Available on Asking
Hydrogen≤ 0.5ppm
Oxygen≤ 0.2ppm
Moisture≤ 0.5ppm
Methane≤ 0.1ppm
Nitrogen≤ 0.4 ppm
Carbon Monoxide≤ 0.1ppm
Carbon Dioxide≤ 0.1ppm
Other Grades and Purity Available on Asking

Package Information

Cylinder CapacityValveVolumebarpsig
40LCGA580 / QF-26 m31502175
47LCGA580 / QF-27 m31502175
50LCGA580 / QF-210 m32002900
Other Packages Available on Asking