sec-butanol0.4870.8030.8060.810n-butanol0.5600.5880.5960.573Water0.6200.6000.7000.890Others0.6330.6010.6390.613Total100.00100.00100.00100.00EXAMPLE 13A mixture containing ethanol, water, ethyl acetate and other components was distilled in a continuous feed laboratory distillation apparatus having the general layout of columns 40 and 52 of FIG. 1, except that line 51 received condensate from line 5