Argon [ Return towards Gas information ]

CAS Number: 7440-37-1
UN1006 (gas); UN1951 (liquid refrigerated)

Main properties :

Molecular weight	39.948 g/mol
Solid phase:
• Melting point	-189⁰C
Liquid phase:
• Density (1.013 bar at boiling point)	1392.8 kg/m³
• Boiling point (1.013 bar)	-185.9⁰C
• Latent heat of vaporisation (1.013 bar at boiling point)	160.81 kJ/kg
Gaseous phase:
• Density (1.013 bar at boiling point)	5.853 kg/m³
• Density (1.013 bar and 15⁰C)	1.67 kg/m³
• Specific volume (1.013 bar and 21⁰C)	0.606 m³/kg
• Heat capacity at constant pressure (1 bar and 15⁰C)	0.02 kJ/(mol.K)
• Heat capacity at constant volume (1 bar and 15⁰C)	0.012 kJ/(mol.K)
• Thermal conductivity (1.013 bar and 0⁰C)	16.36 mW/(m.K)
Concentration in air	0.934 %

Argon can be supplied in cylinder or liquefied gas tank.

Metallurgy, foundry	heat treatment of liquid metal, protective shields
Metal working	welds protection against oxidation, fume emissions reduction
Chemistry	protective atmospheres
Laboratories	pure gas and mixtures for industrial and hospital analyses and quality control
Glass	thermal and acoustic insulation of multi-pane windows
Food & beverages	packing of fresh products in protective atmosphere
Others	car airbag inflation

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