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Title: Partial molal volumes of transfer of some amino acids from water to aqueous 1,4-dioxane solutions at 298.15 K
Authors: Banipal, T S
Singh, Gagandeep
Issue Date: Oct-2000
Publisher: NISCAIR-CSIR, India
Abstract: Apparent molal volumes of glycine , DL-α-alanine , -valine, -leucine and - phenylalanine in water and in 2.5, 5, 10, 20, 25% aqueous solutions of 1,4-dioxane have been obtained from densities of their solutions at 298.15 K measured by using precise vibrating tube digital densitymeter. The estimated partial molal volumes (20) at infinite dilution have been used to obtain corresponding transfer volumes (o2, tr) from water to different 1,4-dioxane-water mixtures which have been found to be positive for glycine, and both positive and negative for the remaining amino acids over the 1,4-dioxane concentration range studied. The data have been interpreted in terms of solute-cosolute interactions. Concentration dependent behaviour of 1,4-dioxane in aqueous solutions have also been taken into account while interpreting the o2, tr values of amino acids.
Page(s): 1011-1018
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.39A(10) [October 2000]

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