Dry Ice

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:

    The good die first
    And they whose hearts are dry as summer dust
    Burn to the socket.
    William Wordsworth (1770–1850)

    The awaited scream rises,
    the shattering
    of glass and the cracking
    of bone
    a polar tumult as when
    black ice booms....
    Denise Levertov (b. 1923)