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  • Chem Sci Trans., 2012, 1(2),  pp 261-268  

    DOI:10.7598/cst2012.154

    Research Article

    Enhanced Solubility and Reflection of Hydrotropy Technique in the Segregation of of m/p-Aminonitrobenze

  • M. DHINAKARAN, ANTONY BERTIE MORAIS and N. NAGENDRA GANDHI
  • Department of Chemical Engineering, A.C. College of Technology, Anna University Chennai, 600 025, India
  • Abstract

    The aqueous solubilities of m/p amino nitrobenzene in different concentrations (0-3.0 mol/L) of hydrotropes such as sodium benzoate, sodium saccharin, dimethyl benzamide at different system temperatures (303 K to 333 K) were studied. The percentage extraction (%E) of m- amino nitrobenzene from m/p- amino nitrobenzene mixture increases with an increase in hydrotrope concentration. A minimum hydrotrope concentration (MHC) in the aqueous phase was required to initiate the significance of the %E of m- amino nitrobenzene. Percentage extraction (%E) is the ratio of moles of m - amino nitrobenzene extracted in presence and absence of a hydrotrope. The sensitivity and feasibility of the proposed process are examined by carrying out solubilization and equilibrium precipitation experiments with the mixtures of various compositions. The effectiveness of hydrotropes was measured in terms of Setschenow constant Ks and reported for all hydrotropes used in this study and determination of aggregation behavior of all hydrotropes were also studied.

    Keywords

    Hydrotropy, Solubilization, Enhanced solubility, Extraction

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