{TAIL ~ Separation} of 3 methyl 2 butanol from 1 butanol by {HEAD ~ azeotropic distillation} 
{ TAIL ~ Separation } of 3 methyl 2 butanol from 1 butanol by { HEAD ~ azeotropic distillation }
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD