Does Muriatic Acid Go Bad?

rollymon

Member
Jul 18, 2007
10
I recently found 2 jugs in my storage area that I had placed there and forgotten 2 or 3 years ago. I simply opened them carefully as to not allow any built up fumes to hit me in the face and then proceeded to pour a few drops of each jug on an out of the way piece of concrete walk. The instant reaction of the acid on the concrete convinced me it was still good. I used the acid to adjust my Ph with accurate results.