The salt, it appeared, was obtained by simple sublimation from soot.
When a heat press is used, the sublimation ink turns to a gas when it reaches approximately 392 degrees Fahrenheit, or 200 degrees Celsius.
We may also consider here cases of sublimation wherein a solid vaporizes and the vapour condenses without the occurrence of the liquid phase.
Finally the anthracene is purified by sublimation.
By sublimation in a current of hydrogen it can be crystallized in the form of regular octahedra; it is slightly harder than tin, but is softer than zinc, and like tin, emits a crackling sound when bent.
