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Carbon dioxide

With very small amounts in air (400ppmv - parts per million by volume), carbon dioxide is a chemical molecule consisting of one carbon atom and two oxygen atoms with the formula of CO2. Under normal temperature and pressure conditions, it is colorless, odorless, non-flammable, unreactive and water soluble.

The carbon dioxide has four states: solid, liquid, gaseous and supercritical, depending on the temperature and pressure conditions, and is marketed in three forms.

Unique properties of carbon dioxide include good inertness and solubility in water. Carbon dioxide keeps beverages fresh, is often used in drinking water treatment and has the ability to replace strong acids to neutralize wastewater. In freezing technology, the liquid and solid form of CO2 becomes dry ice that can be used as a permanent refrigerant or cleaning solution (dry ice blasting).