According to Union Rubber, Inc., this is the only "real adhesive." Made from a heptane
base, this highly viscous glue is extremely flammable, and its vapors may cause flash fire.
Although marketed as a clear paper fastener, rubber cement, like its other glue siblings, evaporates slowly in air and produces potent fumes. These fumes, if properly concentrated (perhaps with a Ziplock
bag, or by fitting one's nose directly into the jar opening), can be inhaled to induce an entirely unpleasant headache. If this sort of thing is your bag
, allow me to suggest purchasing the 16 fl. oz. container--its form is flasklike, and is perfect for discrete carrying on your person.