As old as this topic is I want to tell you a couple of things about muratic acid. First, muratic acid is the acid used in swimming pools to adjust the pH. Another place it's used in in Murine eye drops. However in both the pool and in Murine the acid is VERY diluted. Just looking into a bottle of swimming pool muratic acid can get some fumes in your eye and damage it. Always use goggles. Anyway disposal isn't really damaging if it's diluted enough, just like if you were to drain a swimming pool.