say 10v alcohol the alcohol may contain water for example up to 10w 20w typically 5w but preferably it will be anhydrous anhydrous compositions commonly contain less than about 0 3v water typically 0 001v 0 005v say about 0 004v water one preferred charge may be 100 anhydrous ethanol another preferred charge may be 100 anhydrous methanol commercially available mixtures may be employed illustrative of one such commercially available mixture may be that having the following typical analysis table i______________________________________component parts______________________________________ethanol 3157 2methyl isobutyl ketone 126 3acetic acid 0 256methyl alcohol 0 24isopropyl alcohol 0 2n propyl alcohol 0 162ethyl acetate 0 2______________________________________ it is a particular feature of the process of this invention that it may be used to treat such compositions when they are to be used as fuels including gasohols supra the fuels to be treated by the process of this invention may be substantially anhydrous i e they contain less than about 0 3v water typically they may contain 0 001v 0 005v say about 0 004v water it is a feature of these fuels that they may undesirably contain acidic contaminants which may cause serious corrosion problems these contaminants are particularly in evidence when the alcohol is a commercially available alcohol which contains therein inter alia acids concurrently produced as by fermentation processes for producing ethanol or acids which have been picked up during handling acetic acid is a common acid present in the commercially available alcohols produced by fermentation and it may be present in amount of 0 003v 0 005w of.