azeotrope

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Related to azeotropes: boiling point, Azeotropic distillation

azeotrope

[ā′zē·ə‚trōp]
(chemistry)
azeotropic mixture
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References in periodicals archive ?
azeotropes and increased HOV) on recent observations linking ethanol content to PM emissions.
Distillation-based Droplet Modeling of Non-Ideal Oxygenated Gasoline Blends: Investigating the Role of Droplet Evaporation on PM Emissions
In addition, it is a non-flammable stable azeotrope needing no testing for acid acceptance or stabilising additives, easy to use and maintain and safer for employees and the workplace.
Solving the problem
[11.] Quantitative structure-property relationship (QSPR) modeling of normal boiling point temperature and composition of binary azeotropes / V.P.
Influence of components structure and composition of binary mixtures of organic compounds on toxicity towards daphnia magna
Azeotropes are constant-composition mixtures resulting from the interplay of intermolecular forces in solution.
Kinetics of the Fischer esterification of palm fatty acids with isopropanol and butyl-cellosolve
Two binary systems containing nonane exhibit minimum boiling azeotropes. Azeotropic conditions have to obey to the following relationships:
Isobaric vapour-liquid equilibria of the ternary system hexan-2-one + o-xylene + nonane/ Kolmiksusteemi heksaan-2-oon + o-ksuleen + nonaan isobaariline auru ja vedeliku tasakaal
The paper described halogen-free azeotropes composed of various aliphatic hydrocarbons, carboxylic-acid esters, ketones, and ethers.
Polyurethanes '94: beyond HCFCs
Several azeotropes (refrigerant blends), such as "AZ20" tested by AlliedSignal, however, were shown to perform surprisingly well in drop-in tests.
Environmental savvy: 1994's passport to HVAC harmony
In spite of a few exceptions and of a significant uncertainty band, [T.sub.c], therefore, proves to be a useful tool for a first order screening approximation to get an order of magnitude of the COP and volumetric capacity of various fluids, at least for pure fluids and azeotropes. In the following sections, we will use the same classification also for zeotropic blends, although a more precise analysis of performance by applications will be needed, which will be the subject of part two of this article.
Overview of Fluids For AC Applications
Criteria for the occurrence of azeotropes in such systems have been presented in terms of liquid-phase activity coefficients at infinite dilution ([[gamma].sup.[infinity]]) for the isothermal case (Brandani, 1974), and for both isothermal and isobaric cases (Missen, 2005), including determination from [g.sup.E] expressions.
On determination of azeotrope coordinates from [g.sup.E] for binary isothermal and isobaric systems
HFEs do not have hydrocarbon solvency to match the ODS solvents, but since they can be mixed with other solvents to form azeotropes or co-solvent systems, they can be just as effective in cleaning.
Balanced replacements for ozone depleting substances: Frank Govaerts, 3M Chemicals looks at replacements for ozone depleting substances in precision cleaning and drying applications. (Pre-treatment Chemicals)
Pure refrigerants and azeotropes have a single saturation temperature at a given pressure.
High-Glide Refrigerant Blends & System Retrofits
But, this reaction cannot be carried out at 70[degrees]C as THF/water azeotrope at 65[degrees]C.
He who hesitates is lost; hesitation in the drive to a continuous pharmaceutical manufacturing process: real or imaginary?

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