The act of falling in drops, or the act of pouring out in drops.
2.
That which falls in drops. (R.)
3.
(Chem.) The separation of the volatile parts of a substance from the more fixed; specifically, the operation of driving off gas or vapor from volatile liquids or solids, by heat in a retort or still, and the condensation of the products as far as possible by a cool receiver, alembic, or condenser; rectification; vaporization; condensation; as, the distillation of illuminating gas and coal, of alcohol from sour mash, or of boric acid in steam. Note: The evaporation of water, its condensation into clouds, and its precipitation as rain, dew, frost, snow, or hail, is an illustration of natural distillation.
4.
The substance extracted by distilling.
Destructive distillation (Chem.), the distillation, especially of complex solid substances, so that the ultimate constituents are separated or evolved in new compounds, usually requiring a high degree of heat; as, the destructive distillation of soft coal or of wood.
Dry distillation, the distillation of substances by themselves, or without the addition of water or of other volatile solvent; as, the dry distillation of citric acid.
Fractional distillation. (Chem.) See under Fractional.
adjective
Fractional adj.
1.
Of or pertaining to fractions or a fraction; constituting a fraction; as, fractional numbers.
2.
Relatively small; inconsiderable; insignificant; as, a fractional part of the population.
Fractional crystallization (Chem.), a process of gradual and approximate purification and separation, by means of repeated solution and crystallization therefrom.
Fractional currency, small coin, or paper notes, in circulation, of less value than the monetary unit.
Fractional distillation (Chem.), a process of distillation so conducted that a mixture of liquids, differing considerably from each other in their boiling points, can be separated into its constituents.
"Fractional distillation" Quotes from Famous Books
... oil, where the proportion of aldehydes, though of great importance, is relatively very small, it is necessary to first concentrate the aldehydes before determining them. For this purpose, 100 c.c. of the oil is placed in a Ladenburg fractional distillation flask, and 90 c.c. distilled off under a pressure of not more than 40 mm., and the residue steam distilled. The oil so obtained is separated from the condensed water, measured, dried, and 5 c.c. assayed for aldehydes either by the process already described, ... — The Handbook of Soap Manufacture • W. H. Simmons Read full book for free!
...
Read full book for free!
