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CO2

Carbon Dioxide

Colorless, odorless, nonflammable, slightly acidic, liquefied gas.
Shipping Information
D.O.T. Proper Shipping Name:
Carbon Dioxide
I.D. Number:
UN1013
Hazard Class:
2.2
Shipping Labels:
Nonflammable Gas
Technical Information
Molecular weight:
44.011
Specific volume:
8.76 ft3/lb
CAS registry:
124-38-9
SDS ref:
Carbon Dioxide
About

Carbon dioxide (CO₂) is a remarkably versatile molecule that plays a central role in both natural processes and human activities. Its linear structure, with a carbon atom forming double bonds to two oxygen atoms, gives it unique properties – at room temperature, it exists as a colorless, odorless gas that’s heavier than air, but it can also transition directly from a solid (dry ice) to a gas through sublimation, bypassing the liquid phase entirely at normal atmospheric pressure.

In everyday applications, carbon dioxide’s ability to form bubbles under pressure makes it responsible for the fizz in carbonated beverages, while its temperature-dependent phase transitions make it valuable for everything from fire extinguishers to supercritical fluid extraction in the production of decaffeinated coffee and essential oils.

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