Abstract
Liquid-liquid equilibria were measured to study the feasibility of using N, N-diethylmethylamine (DEMA) for extractive crystallization of sodium chloride or sodium sulfate. This paper reports that the experimental results show that DEMA selectively extracts water from saturated sodium chloride solution at low temperatures (5-10{degrees} C), causing sodium chloride crystals to precipitate. DEMA also selectively extracts water from saturated sodium sulfate solution at moderate temperature (21-25{degrees} C), precipitating sodium sulfate decahydrate.
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