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Carbon dioxide

Air Liquide Canada supplies liquid and solid carbon dioxide for a large range of applications

Carbon dioxide (CO2) gas is formed from the combination of two elements: carbon and oxygen. CO2 gas has a slightly irritating odor, is colorless and heavier than air. It freezes at -78.5 °C to form carbon dioxide snow. Carbon dioxide emitted into the atmosphere by chemical and oil and gas operations can be captured, purified, liquefied. Air Liquide Canada offers carbon dioxide in different modes of supply (bulk, cylinders, dry ice) for use in many industries and applications.


Carbon dioxide (CO2) serves a variety of key applications across industries. Below you will find main applications using CO2 for different industries:

Industries Applications
Aeronautics, Automotive

Emission testing and monitoring

Engine inspection and testing

Beverage, Food


Chilling and freezing
CO2 enrichment in greenhouses

Modified atmosphere packaging

Temperature control

Environment, Mines pH control
Metal Fabrication Shielding gas in semi-automatic welding process
Oil & Gas

Hydraulic fracturing

Enhanced Oil Recovery (EOR)

Steam Assisted Gravity Drainage (SAGD)
Pulp & Paper

Tail oil neutralization

Near neutral bleaching

pH control

Lignin precipitation



To choose the right regulator, flowmeter, or accessories according to your use of gas cylinder, please consult our dedicated page to Gas handling equipment and accessories for industrial gases.

You can also consult our application equipment page to discover our solutions for food, beverage industries that use carbon dioxide.


Air Liquide Canada offers carbon dioxide with several brands for different applications/industries :

  • ARCAL™and BLUESHIELD™ for welding applications.
  • ALIGAL™ for food and beverage industries.
  • LASAL™ for laser cutting application
  • ALTOP™ AND SMARTOP™ are our safe, ergonomic, user-friendly cylinders and valves for small, medium and mobile gas needs.