Carbon dioxide is an odourless, colourless, non-toxic, non-flammable gas. Supplied as a high pressure liquefiable gas in metal cylinders. Welding grade CO₂ is a general purpose shielding gas for steel sections and plate. Used primarily for short arc  welding of mild steels with all diameters of solid steel MIG wire and flux cored gas shielded wires. Industrial grade CO₂ is used as an inert atmosphere for industrial applications such as the prevention of oxidation and conveying flammable materials.

Applications

Applications include: beer dispensing, post-mix soft drink dispensing, shielded arc welding, sparging, foundry sand mould curing, fire fighting, gas atmosphere for preservation of packaged foods and animal immobilisation.