Ozone is a pale blue
gas, slightly soluble in water and much more soluble in inert non-polar solvents
such ascarbon tetrachlorideor
fluorocarbons, where it forms a blue solution. At –112 °C, it condenses to form
a dark blueliquid. It is dangerous
to allow this liquid to warm to its boiling point, because both concentrated
gaseous ozone and liquid ozone can detonate. At temperatures below –193 °C, it
forms a violet-blacksolid.