Carbon Dioxide (CO2) is a colorless, odorless and nonflammable gas heavier than air. It is classified as one of the major air pollutants when it exceeds its naturally-occurring concentration. There are a number of processes for its production including combustion, fermentation and heating of organic matter. Its main use is in the food and beverage industry, although it is also used as a refrigerant, in fire extinguishing equipment, as a pressure source, aerosol propellant, and also in welding and some metallurgical processes.
Below are some of its major physical characteristics:
|Molecular weight: 44.0098||Critical temperature: 304.21K|
|Melting point: 216.5K||Critical pressure: 7.3825MPa|
|Normal boiling point: 194.67K||Critical density: 466 kg/m3|
|Normal vapor density: 1.98 kg/m3||(@ 273.15K; 1.0135MPa)|
NOTE: The values of thermodynamic properties have been obtained from reference , the values of transport properties have been obtained from reference , while the values of the surface tension have been obtain from reference .
Angus, S., deReuck, K. M., and Armstrong, B. (1972) International Thermodynamic Tables of the Fluid-State - 3, Carbon Dioxide, Pergamon Press, Oxford.
Beaton, C. F. and Hewitt, G. F, (1989) Physical Property Data for the Design Engineer, Hemisphere Publishing Corporation, New York. DOI: 10.1016/0300-9467(89)80011-5
Vesovic, V: et al. (1990) The Transport Properties of Carbon Dioxide, J. Phys. Chem. Ref. Data, 19:763.