New compounds for the control of water evaporation

Deo, A. V. ; Sanjana, N. R. ; Kulkarni, S. B. ; Gharpurey, M. K. ; Biswas, A. B. (1960) New compounds for the control of water evaporation Nature, 187 . pp. 870-871. ISSN 0028-0836

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Considerable attention has lately been directed towards effective suppression of water evaporation from lakes and reservoirs by spreading insoluble monomolecular films over the water surfaces. In order to be effective, the film-forming compound should have several desirable properties such as : (i) low melting point (~50° C.), which will enable it to spread rapidly on the water surface so that its monomolecular film, if damaged, is easily healed ; (ii) large equilibrium film pressure at the temperatures of water surfaces (15-40° C.) normally met with in practice ; (iii) the film formed should be stable, incompressible and condensed.

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