Carbon Dioxide

Carbon dioxide (CO2) is a colorless, non-combustible, odorless and tasteless gas. Together with water, it forms carbonic acid (H2CO3).

Special properties of carbon dioxide, such as its inertness and high water solubility, make CO2 an ideal aid in numerous htmlects of daily life and environmental technology. In foodstuffs technology, for example, CO2 is used to carbonate many beverages. It is just as useful for conditioning drinking water and neutralizing waste water. As a cryogenic liquid or in solid form (dry ice), CO2 is used as a refrigerant at temperatures as low as -79℃.

Carbon dioxide is obtained partly from natural sources and partly from industrial exhaust gases. Economically significant quantities of carbon dioxide are generated as a by product of synthetic gas and ethylene oxide.

Natural sources of CO2 are located especially in volcanic areas. Here, CO2 sometimes exists even at the surface, or wells are drilled to access known deposits.