Sublimatory
image:sublimation apparatus.svg, 200px, Simple sublimation apparatus. Water usually cold, is circulated in cold finger to allow the desired compound to be deposited.1 Cooling water in 2 Cooling water out 3 Vacuum/gas line 4 Sublimation chamber 5 Sublimed compound 6 Crude material 7 External heating A sublimatory or sublimation apparatus is equipment, commonly laboratory glassware, for purification of Chemical compound, compounds by selective Sublimation (chemistry), sublimation. In principle, the operation resembles purification by distillation, except that the products do not pass through a liquid, liquid phase. Overview A typical sublimation apparatus separates a mix of appropriate solid materials in a vessel in which it applies heat under a controllable atmosphere (air, vacuum or inert gas). If the material is not at first solid, then it may freeze under reduced pressure. Conditions are so chosen that the solid volatility (chemistry), volatilizes and condenses as a purified comp ...
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