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Related to azeotropes: boiling point, 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 ?
At Michigan's East Lansing High School, tenth grader Erik Liedholm studied azeotropes in Mr.
Additionally, ethanol as well as other potential biofuels can form azeotropes when blended with gasoline.
ProSolv like many other fluorinated solvent azeotropes is extremely effective for precision cleaning in high-tech industries such as aerospace, aviation, electronics and medical due to the use of an additive trans 1,2-dichloroethylene.
Quantitative structure-property relationship (QSPR) modeling of normal boiling point temperature and composition of binary azeotropes.
Figure 6a and b displays the results of % equilibrium swelling [39] of nascent PVA and MMMs at 30[degrees]C for 10, 15, and 20 wt% of water--ethanol and water--IPA mixtures as well as their azeotropes (12.
The relation of water and methanol in the vapor may have varied over the time due to the facts that mixtures of Water and Methanol form azeotropes.
This work has included the study azeotropes (59), gasolines (41), (53), (58), (60), (61), aviation fuels (39), (47), (50), (62-74), diesel fuels (75-85), crude oils (54), (55) and rocket propellants (39), (86-89).
Reactive distillation shows characteristics that makes the process highly attractive: (i) process simplification decreases costs with equipments; (ii) greater conversions may be obtained for chemical equilibrium-limited reactions with cost reduction through the recycling of excess reagents; (iii) higher selectivity is obtained; (iv) the employment of smaller amount of catalysts for the same conversion degree; (v) reaction conditions may avoid possible azeotropes of the reaction's product mixture and thus avoid the use of auxiliary solvents; (vi) benefits of heat integration are obtained by the heat produced in the chemical reaction for vaporization and, consequently, hot spots are avoided (TAYLOR; KRISHNA, 2000).
Hydrazines can also form azeotropes with water; for example, hydrazine at the mixture composition 71.
Mixing properties of binary mixtures presenting azeotropes at several temperatures, The Journal of Chemical Thermodynamics, 39, 1219-1230
Except for R-436A and R-436B, others are either azeotrope or near-azeotropes.
Nondimensional Thermodynamic Parameters for Twenty Near- Azeotropes that are Potential R-114 Replacements Binary Mixture Mass Reference Source [[tau].