Subboiling
Subboiling is a practical term used to describe heating a liquid to a temperature just below its boiling point, with the goal of generating vapor gradually while avoiding vigorous boiling. It is not a formal thermodynamic phase; rather, it denotes a controlled operating condition commonly used in laboratory and some industrial settings.
In practice, subboiling is achieved with careful temperature control using devices such as water baths, oil
Applications span several contexts. In laboratory distillation and solvent recovery, subboiling helps concentrate liquids and remove
Caveats include the lack of a precise temperature boundary for subboiling; it depends on the liquid’s properties
See also: boiling point, simmering, distillation, vacuum distillation, reflux.