Hydrogen peroxide is a precursor chemical for bomb making, thus the reason I can no longer get the wood bleach I used to use. Banned. Now bathtub bomb makers can make their own.
I saw a guy on youtube who showed how to boil the water out of the 2% stuff. It seems to work, the water boils off faster than the h2o2 breaks down. I tried it and got to 5%. That’s already getting strong. I got some concentrate on eBay— 12.5 % and that stuff would burn your skin.
It’s good for mold.