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Related to Azeotropic Mixture: fractional distillation, Azeotropic distillation


 (ə-zē′ə-trōp′, ā′zē-)
A liquid mixture of two or more substances that boils at a constant characteristic temperature lower or higher than any of its components and that retains the same composition in the vapor state as in the liquid state.

[a- + Greek zein, to boil; see zeolite + Greek -tropos, turning; see -tropous.]

a′ze·o·trop′ic (ā′zē-ə-trŏp′ĭk, -trō′pĭk) adj.
a′ze·ot′ro·py (-ŏt′rə-pē) n.


(Elements & Compounds) a mixture of liquids that boils at a constant temperature, at a given pressure, without change of composition
[C20: from a-1 + zeo-, from Greek zein to boil + -trope]
azeotropic adj


(əˈzi əˌtroʊp, ˈeɪ zi-)
any liquid mixture having constant minimum and maximum boiling points and distilling off without decomposition and in a fixed ratio.
[1910–15; a-6 + Greek zé(ein) to boil + -o- + -trope]
a•ze•o•trop•ic (ˌeɪ zi əˈtrɒp ɪk, -ˈtroʊ pɪk) adj.


(azeotropic mixtures) A mixture of liquids which boils without a change in composition. When it boils it gives off a vapor whose composition is the same as the liquid.
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References in periodicals archive ?
No measurable difference has been recorded for the PHP running with azeotropic mixture of ethanol (95.
2]O at the boiling point of the azeotropic mixture is a function of the apparent "volatility" of water in the mixture.
When separation is very difficult because the components of a mixture have almost identical volatilities, improvement can be made by adding a different component which is soluble in the mixture or which forms a constant boiling or azeotropic mixture with one or more of the original ingredients, thus permitting greater ease of separation.
In addition, when water is combined in an azeotropic mixture with certain solvents the evaporation can be accelerated.
7 Elongation, % Unaged 450 415 450 510 Aged (5 days/80 [degrees] C) 330 450 390 420 Extracted/aged 200 260 300 300 Extraction: Azeotropic mixture -acetone/chloroform/methanol (12 hr.