Dry ice, sometimes referred to as "Cardice" or as "card ice" (chiefly British English), is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue (other than incidental frost from moisture in the atmosphere). It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.
Dry ice sublimates at −78.5 °C (−109.3 °F) at atmospheric pressure. This extreme cold makes the solid dangerous to handle without protection due to burns caused by freezing (frostbite). While generally not very toxic, the outgassing from it can cause hypercapnia due to buildup in confined locations.
Read more about Dry Ice: Properties, History, Manufacture, Safety, Occurrence On Mars
Famous quotes containing the words dry and/or ice:
“I knew very well that this hope was chimerical. I was like a pauper who mingles fewer tears with his dry bread if he tells himself that at any moment a stranger will bequeath to him his fortune. We must all, in order to make reality more tolerable, keep alive in us a few little follies.”
—Marcel Proust (1871–1922)
“Goodness and evil never share the same road, just as ice and charcoal never share the same container.”
—Chinese proverb.