Alcoholic compositions with improved properties and methods for evaluating interaction of the compositions with surfaces

A foamable disinfecting composition comprising:

• at least about 40 wt. % of a C1-6 alcohol, based upon the total weight of the disinfecting composition;
• a foaming surfactant selected from the group consisting of fluorosurfactants and siloxane-based polymer surfactants;
• and
• from about 0.4 to about 5 wt. % of glycerin, based upon the total weight of the composition, wherein the composition exhibits reduced tack, when applied to a surface that has been coated with a floor wax, when compared to the tack that is exhibited by the same composition but containing less than about 0.4 wt. % of glycerin, based upon the total weight of the composition.

A method for measuring the tack of a surface to indicate the interaction of an alcoholic disinfecting composition with a floor wax, the method comprising the steps of:

• coating a surface with floor wax,
• allowing the coating to dry,
• applying an amount of the disinfecting composition to the coated surface, sufficient to form a thin layer over the coated surface,
• measuring, after a pre-determined amount of time, the tack of the coated surface, by using a controlled force measurement inverted probe machine, wherein a detectable amount of tack indicates that the disinfecting composition has interacted with the floor wax,
• allowing the disinfecting composition to dry, thereby forming a disinfectant layer,
• sampling the disinfectant layer, by swabbing or blotting the disinfectant layer,
• testing the sample by Fourier Transform Infrared analysis,
• measuring the absorption of the sample at a pre-selected wavelength that correlates to the floor wax control and that does not correlate to the disinfecting composition, wherein measurable absorbance at said wavelength provides confirmation that interaction has occurred.