hexanetriol 34 34 1 52 1 69dmfa acetamide n n dimethylacetamide 34 34 2 00 1 99dmfa acetamide ethylene carbonate 34 34 1 57 1 90dmfa acetamide propylene carbonate 34 34 1 24 1 21acetamide n n dimethylacetamide propylene glycol 34 34 1 83 1 41acetamide n n dimethylacetamide 1 4 butanediol 34 34 2 08 1 52acetamide n n dimethylacetamide 1 6 hexanediol 34 34 1 50 1 60acetamide n n dimethylacetamide glycerine 34 34 1 95 2 08dmso dimethylformamide 34 34 2 05 2 32dmso acetamide 34 34 1 86 1 66dmso n n dimethylacetamide 34 34 2 21 2 20dmso ethylene carbonate 34 34 1 50 1 62dmso propylene carbonate 34 34 1 31 1 40dmso dmfa ethylene carbonate 34 34 1 46 1 85dmso dmfa propylene carbonate 34 34 1 56 1 57dmso dmfa n n dimethylacetamide 34 34 2 18 2 22dimethylsulfoxide dmso 1 6 5 1 71 2 29__________________________________________________________________________ table 2 lists some single compounds and mixtures which are ineffective in separating isobutyl acetate from isobutanol the two relative volatilities shown in table 1 correspond to the two different ratios employed for example in table 1 one part of n n dimethylacetamide with one part of isobutyl acetate isobutanol water azeotrope gives a relative volatility of 1 49 6 5 parts of n n dimethylacetamide gives 1 69 one half part of dmfa mixed with one half part.