what is the difference between grain alcohol and vodka?
When Grain Alcohol is 95% pure, it is 190 proof. The chemical formula is C2H5OH. Grain Alcohol differs from vodka in that vodka is more diluted, and charcoal filtered. ... It can be used as a disinfectant, but you don't need full-strength: a solution of 3 parts Grain Alcohol to 1 part water will do it.