Liquid carbon dioxide

[1] Low-temperature carbon dioxide is commercially used in its solid form, commonly known as "dry ice".

[3] The liquid carbon dioxide not only reduces combustion by displacing oxygen, but also cools the burning surface to avoid further damage.

Solvent extraction using compressed liquid CO2 can be used in industrial processes such as removing caffeine from coffee[3] or improving the yield of olive oil production.

[6] Liquid carbon dioxide is being considered as a means of CO2 transportation for underground or subsea storage purposes.

[7] Other chemical compounds and elements are commonly used for commercial and research purposes in their liquid state:

Jets of liquid carbon dioxide
A container of liquid carbon dioxide behind a restaurant
Carbon dioxide pressure-temperature phase diagram
Fire extinguisher