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 (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 ?
This procedure involved solid-phase extraction, azeotropic distillation, and derivatization with pentafluoro(methyl)benzylbromide, followed by gas chromatographic detection.
Ac-celerated aging studies have been carded out in which compound protected by 6-QDI or PPD has been subjected to azeotropic extraction followed by hot air aging.
Singh to tell about their work on an azeotropic blend of HFC-125 and HFC-143a as a replacement for R-502 in low evaporator temperature applications.
* to improve the product A/azeotropic agent cut by reducing the cut time, by decreasing the consumption of the azeotropic agent, and by minimizing the amount of product A remaining in succeeding cuts.
XP10 is a non-flammable (ASTM 2004) azeotropic refrigerant with no ODP and a GWP near 600.
Diane: Opteon[TM] XP10 is an azeotropic refrigerant blend based on HFO-1234yf.
The near azeotropic refrigerant mixture of R-410A has been considered as one of the primary replacements for R-22 in air-conditioning system applications.
They developed a diagram to distinguish azeotropic and nonazeotropic systems that required more information (molar entropy of the pure components) than used here or previously (Missen, 2005).
Another varient incorporates a modification to the cooling finger enabling the study of azeotropic reaction mixtures..
Cain tested vulcanizates protected with quinone imines or quinone diimines before and after hot methanol-acetone-chloroform azeotropic extraction.
Refrigerant blends (Atwood suggested that a blend of HFC-125 with some other chemical might overcome the problems of straight HFC-125) come in three varieties: azeotropic, in which the boiling points of the constituents are the same; near azeotropic, in which they are close; and simple mixtures, in which the boiling parts are far apart.