Dear Dr. Evgenii Salganik,

I suggest you to have a look at the following, interesting papers:

-Enhanced density fluctuations in water-ethanol mixtures at low ethanol concentrations: Temperature dependent studies

Rikhia Ghosh, Biman Bagchi

Full text available directly on RG at: https://www.researchgate.net/publication/301819219_Enhanced_density_fluctuations_in_water-ethanol_mixtures_at_low_ethanol_concentrations_Temperature_dependent_studies

-Molecular segregation observed in a concentrated alcohol-water solution

Sanhita S Dixit, Jason Crain Wilson Poon, J L Finney, AK Soper

Nature 416(6883):829-32 (2002)

Available on RG at: https://www.researchgate.net/publication/11391851_Molecular_segregation_observed_in_a_concentrated_alcohol-water_solution

and for the phase diagram ethanol water, you can have info at the web site:

https://commons.wikimedia.org/wiki/File:Phase_diagram_ethanol_water_s_l_en.svg

Best regards, Pierluigi Traverso

When you freeze a water-ethanol solution, you form ice (pure water) and the ethanol concentration in solution increases. You can find, in the reference below a figure with the phase diagram ethanol/water on figure 3 (same as the one given above), but with instructions on how to read it (reading phase diagrams is always a nightmare!)

Article Rheological study of two-phase secondary fluids for refriger...

See attached articles

Article Ethanol-water mixtures: Ultrasonics, Brillouin scattering an...

Dear Evgenii Salganik,

Water clustering is found to be significantly enhanced in both alcohol(methyl or ethyl) solutions compared to the water clustering that occurs for random, hard sphere-like, mixing with no hydrogen bonds between molecules. Alcohol clustering via the hydrophobic groups is, on the other hand, only slightly sensitive to the water hydrogen bond network. Ethanol, like methanol, bi-percolates at this concentration and that, in a similar manner to methanol, alcohol segregation, as measured by the proximity of neighboring methyl side chains, is increased upon cooling the solution. One of the study confirms, Percolation analyses generally reveals that each mixture (even the one containing 80 mol% ethanol) is above the 3D percolation threshold, with fractal dimensions, between 2.6 and 2.9, depending on concentration. It is the structural change between ethanol's clustering and water-ethanol micro-segregation that corresponds to the maximum observed in the speed of sound around x = 0.15.If I see the inhomogeneous solution, he mobility of polystyrene beads from the Brownian motion in a water-ethanol mixture is larger than that predicted from the liquid shear viscosity.

Ashish