<Tr> <Td> </Td> <Td> Some of the image captions in this article require cleanup to comply with Wikipedia guidelines for trivial wording . In particular, the captions for Dry ice in cup and Dry ice bomb should be cleaned - up right away . See Wikipedia's picture tutorial and image help pages--review policy on image use and check the talk page--visit the Graphics Lab and improve this article if you can . (June 2017) </Td> </Tr> <P> Dry ice, sometimes referred to as "cardice" (chiefly by British chemists), 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 where mechanical cooling is unavailable . </P> <P> Dry ice sublimates at 194.65 K (− 78.5 ° C; − 109.3 ° F), at Earth atmospheric pressures . 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 (abnormally elevated carbon dioxide levels in the blood) due to buildup in confined locations . </P> <P> Dry ice is the solid form of carbon dioxide (CO), a molecule consisting of a single carbon atom bonded to two oxygen atoms . Dry ice is colorless, non-flammable, with a sour zesty odor, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H CO). </P>

What is the temperature of dry ice in kelvin