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Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (16): 1531-1535. Previous Articles Next Articles
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许莉*,王旭,林瑞森
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XU Li*,WANG Xu,LIN Rui-Sen
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Densities of L-serine in 1,2-propanediol-water and 1,2-butanediol-water mixed solvents have been measured at 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes, transfer volumes and hydration numbers for L-serine have been calculated. The transfer volumes from water to alcohol-water mixtures and hydration numbers have been discussed in terms of the structural hydration interaction model. The results show that the transfer volumes of serine from water to alcohol-water mixed solvents are positive and the hydration numbers decrease. These may be regarded as a result of a dominant interaction between —OH group of alcohol and ionic group of serine.
Key words: L-serine, 1,2-propanediol, 1,2-butanediol, limiting partial molar volume, structural interaction
XU Li*,WANG Xu,LIN Rui-Sen. Volumetric Properties of L-Serine in 1,2-Propanediol-Water and 1,2-Butanediol-Water Mixed Solvents at 298.15 K[J]. Acta Chimica Sinica, 2005, 63(16): 1531-1535.
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