It is a further object of {HEAD ~ this invention} to identify organic compounds which, in addition to the above constraints, are stable, can be separated from isopropanol by {TAIL ~ rectification} with relatively few theoretical plates and can be recycled to the extractive distillation column and reused with little decomposition 
It is a further object of { HEAD ~ this invention } to identify organic compounds which , in addition to the above constraints , are stable , can be separated from isopropanol by { TAIL ~ rectification } with relatively few theoretical plates and can be recycled to the extractive distillation column and reused with little decomposition
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