may be supplemented with additional denaturant to bring the concentration of the denaturant to the level needed for antimicrobial efficacy for example additional features of the embodiments of the invention are further described in the following non limiting examples unless indicated otherwise all parts and percentages are on a weight basis components used in formulations described in the various examples are listed in table 1 the ethanol solutions of examples 1 4 and comparative examples a and b were prepared by adding the components listed in table 1 according to the amounts listed in table 2 to a clean glass container the solutions were mixed by shaking a determination of unfitness for beverage purposes was made for each of the ethanol solutions by organoleptic examination as described in 27 cfr 17 134 by tasting samples of the product diluted with water to an alcohol concentration of 15 by volume two individuals one male one female tasted 0 5 grams of each of the ethanol solutions to demonstrate the effectiveness of the identified denaturant the compositions and the taste observations of the various ethanol solutions are set forth in table 2 the examples presented in table 3 represent the amounts and concentrations for the process of denaturing 100 gallons 378 5 liters of 190 proof ethanol u201c etoh u201d at three different levels of chg for instance example 6 was prepared by adding 1 23 kg of 20 w v chg to 100 gallons 378 5 liters of 190 proof ethanol this resulted in a solution of denatured ethanol with 285 kg pure ethanol 24 3 kg of water and a concentration of 0 08 w w chg if the ethanol solutions of.