Phenarsazine chloride undergoes it readily, making it useful as a chemical warfare agent, and uranium hexafluoride undergoes it to separate uranium isotopes.
Dalziel Hammick showed that this process in alpha-trioxymethylene results in polyoxymethylene, which was later used as a commercial polymer. Phenarsazine chloride undergoes it readily, making it useful as a chemical warfare agent, and uranium hexafluoride undergoes it to separate uranium isotopes. The Hortvet device can determine the temperature at which this occurs, and so-called "flowers of sulfur" are created by it. An apophorometer uses it to identify minerals, and hoar crystals always grow by this process. Occurring at temperatures and pressures below the triple point, for 10 points, name this phase exemplified by dry ice, in which a solid changes directly into a gas.
Dalziel Hammick showed that this process in alpha-trioxymethylene results in polyoxymethylene, which was later used as a commercial polymer.
{sublimation}