azeotrope


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azeotrope

[ā′zē·ə‚trōp]
(chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In the phase interface, the adipate has slightly stronger binding capacity with gasoline which causing the decrease of the gasoline evaporate by bonding with the methanol molecules to form the low-boiling azeotrope.
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.
But, this reaction cannot be carried out at 70[degrees]C as THF/water azeotrope at 65[degrees]C.
After fermentation, water is removed from the fermented wine solution by distillation, but the purity is limited to ~96% (hydrated ethanol, 96[degrees]GL, Gay-Lussac) due to the formation of a low-boiling water-ethanol azeotrope. It is important to note that the 96[degrees]GL ethanol may be used directly as fuel by specially designed Brazilian cars (Moreira and Goldemberg, 1999).
Except for R-436A and R-436B, others are either azeotrope or near-azeotropes.
Due to inefficient stripping and the formation of an azeotrope at 38.26 wt% HF in water (Munter et al., 1947), a significant part of the fluorine losses are in the form of HF in the acid re-run bottoms; this is considered in greater detail below.
It can be run without a solvent, but is faster and more reproducible in the presence of a solvent such as xylene, which forms an azeotrope with water.
These solvents form an azeotrope with a boiling point close to that of ethyl acetate, and thus the solvent keeping approach would not work.
An azeotrope was prepared, (halothane/ether 2/1, boiling point 51.5[degrees]C).
Some cosolvents like iso-propanol can form an azeotrope with water to lower the mixtures total boiling point temperature and therefore evaporation of water is aided.
Starting at 190[degrees]C, a xylene-water azeotrope was collected overhead.