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Argon (Ar):
Physical Properties:
| Molecular Weight |
39.948 kg/kmol |
| Critical Temperature |
-122.3 C |
| Critical Pressure |
48.9 bar |
| Boiling point at 1.013 bar |
-185.9 C |
| Gas density at 1.013 bar |
1.691 kg/m3 |
| Relative gas density to air = 1 |
1.379 |
| Compressibility at 1.013 bar |
0.999 |
Cylinder
Data:
| Colour |
body - peacock blue |
| Valve |
right hand - conforming to IS 3224 |
| Water capacity |
47 / 50 ltrs. (standard) |
Gas
Specifications:
| GRADE |
MAXIMUM LEVEL OF CRITICAL IMPURITIES (PPM BY VOLUME) |
|
O2 |
H2O |
THC |
N2 |
CO + CO2 |
| Argon SPL |
1.0 |
1.0 |
0.5 |
3 |
ND |
| Argon I |
2.0 |
2.0 |
0.5 |
5 |
ND |
| Argon II |
4.0 |
4.0 |
1.0 |
10 |
0.5 |
Some
typical applications:
- Carrier gas in gas chromatography
- Filling of lamps with Nitrogen / Neon / krypton
- Shielding gas for welding (pure or mixed)
- Inductive coupled plasma (ICP)
- Shielding atmosphere for molten metals
- Stainless steel refining
- In excimer lasers with Helium or Neon.
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