and I've had tabs of acid wrapped in tinfoil inside a small ziploc inside a filing cabinet with questionable temperature stability work just fine after several

and I've had tabs of acid wrapped in tinfoil inside a small ziploc inside a filing cabinet with questionable temperature stability work just fine after several years. Some of that acid, if I remember right, was taken into a rave, lived in my pocket for a few hours inside... foil or a ziploc, I forget, and then came home to rest in that filing cabinet.