Anidride carbonica

Carbon dioxide is a colorless, odorless, tasteless and non-toxic gas. Melting point -56.6°C (0.52MPa), boiling point -78.6°C (sublimation), density 1.977g/L.

Carbon dioxide has a wide range of industrial uses.

Dry ice can be obtained by liquefying carbon dioxide into a colorless liquid under a certain pressure, and then rapidly solidifying under low pressure. Its temperature is minus 78.5 ℃. Because of its very low temperature, dry ice is often used to keep objects frozen or cryogenic.