Old hydrogen peroxide?!
Question: Old hydrogen peroxide?
I have hydrogen peroxide that has been expired since 2008. Everyone I ask if this is okay to use says it is but really? Is it? Maybe this is just a way for companies to get more money setting due dates for it? And if it does expire is it really a big deal?
Answers:
Hydrogen Peroxide H2O2 is unstable. It releases the extra oxygen molecule and turns to plain water H2O. After the expiration date it no longer is effective at preventing infection.
Before you get a bunch of useless answers from people guessing, this was answered a while back ago, I suggest you check on this post.