Carbon dioxide [ Return towards Gas information ]

CAS Number: 124-38-9
UN1013 (gas); UN2187 (liquid refrigerated); UN1845 (solid)

Main properties :

Molecular weight	44.01 g/mol
Solid phase:
• Density	1562 kg/m³
Liquid phase:
• Density (1.013 bar and -20⁰C)	1032 kg/m³
• Boiling point (sublimation)	-78.5⁰C
• Latent heat of vaporisation (1.013 bar at boiling point)	571.08 kJ/kg
• Vapour pressure (at 20⁰C)	58.5 bar
Gaseous phase:
• Density (1.013 bar at sublimation point)	2.814 kg/m³
• Density (1.013 bar and 15⁰C)	1.87 kg/m³
• Specific volume (1.013 bar and 21⁰C)	0.547 m³/kg
• Heat capacity at constant pressure (1 bar and 25⁰C)	0.037 kJ/(mol.K)
• Heat capacity at constant volume (1 bar and 25⁰C)	0.028 kJ/(mol.K)
• Thermal conductivity (1.013 bar and 0⁰C)	14.65 mW/(m.K)
Concentration in air	0.03 %

Carbon dioxide can be supplied in cylinder, liquefied gas tank or in solid form (dry ice).

Metallurgy, foundry	red fume suppression in converter plants, cleaning of casting moulds with dry ice
Metal working	heat treatment of various metal
Chemistry	foamed plastics manufacturing
Laboratories	pure gas and mixtures for industrial and hospital analyses and quality control
Healthcare	surgical dilation
Food & beverages	carbonation of beverages, freezing and chilling of foodstuff, temperature control during distribution of foodstuff
Others	tires filling; fire protection of mine excavations

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