Well, from my limited understanding of these things, I'd be more worried about alcohol b/c it works as a degreaser, not because it is chemically active enough to damage/patina a razor, like acids such as vinegar or naval jelly. When I've blued blades and had them completely degreased they happily rust very quickly. Somewhat in keeping with this experiment, those that have had high grit buffing can rust within an hour.