2007•Journal of Chemical & Engineering DataOpen access

Three-Liquid-Phase Equilibria for the Quaternary System Water + tert-Butanol + n-Decane + n-Undecane in the Tricritical Region

Yongsheng Xiang, Xueqin An, Weiguo Shen

Abstract

The three-liquid-phase equilibria data of the quaternary system water (1) + tert -butanol (2) + n -decane (3) + n- undecane (4) in the tricritical region are reported. It has been found that the mass fraction of n -decane in ( n -decane + n- undecane) controls the size of the three-phase region and the approach to the tricritical point. The experimental data have been analyzed to obtain the tricritical temperature and the tricritical composition.

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Key concepts: Undecane, Decane, Tricritical point, Phase (matter), Chemistry, Thermodynamics, Butanol, Physics