{HEAD ~ This invention} relates to {TAIL ~ a method} for separating 3 methyl 2 butanol from 1 butanol using certain organic liquids as the agent in azeotropic distillation 
relates to
{ HEAD ~ This invention } relates to { TAIL ~ a method } for separating 3 methyl 2 butanol from 1 butanol using certain organic liquids as the agent in azeotropic distillation
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