Hydrotropic solutions can be used in separation of two isomers as hydrotropes at high concentrations can enhance solubilities of these isomers in aqueous solution differently. Solubility data are determined for o and p chloronitrobenzenes (CNBs) in aqueous solutions of sodium butyl monoglycol sulphate (NaBMGS). o CNB is highly solubilized as compared to p CNB and can be precipitated out selectively on dilution with water at a reasonable recovery. Precipitation kinetics of p CNB determined from a solvent capacity varying batch crystallizer using the method of s plane analysis show that the relative order with respect to linear growth rate in conventional power law relative nucleation correlation is near unity.
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GEETHA et al. (1991) studied this question.
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