Dry Ice Basic Information
Solid Carbon Dioxide
Dry Ice is the solid form of carbon dioxide (CO2), a gas that occurs naturally in the earth’s atmosphere. If you are unfamiliar with carbon dioxide (CO2), this is the gas used to give soda fountain drinks their fizz. Carbon dioxide is also a byproduct of several industrial processes, like ethanol production.
It is extremely cold (-109.3°F or -78.5°C) and does not melt like regular ice. Instead, it turns directly from a solid to a gas, a process called sublimation. Since it does not leave a liquid residue and is extremely cold, it is ideal for keeping items frozen.