Molecular Distillation

Name:
Molecular Distillation
Detailed information:
(high-vacuum distillation). Distillation at low pressures of the order of 0.001 mm Hg. A molecular distillation is distinguished by the fact that the distance from the surface of the liquid being vaporized to the condenser is less than the mean free path (the average distance traveled by a molecule between collisions) of the vapor at the operating pressure and temperature. This distance is usually of the order of magnitude of a few inches. This process is useful in separation of extremely high boiling and heat-sensitive materials such as glycerides and some vitamins.