There is site that gives info on H2O2...hydrogen peroxide..but I am not on my personal computer and dont have the address. I can tell you that as a solution to help prevent mold the solution is 1 and a half teaspoons per cup of water. I had a mold infestation that I got under control by using that as a spray for my leafs and I used the 3% right out of the bottle as a disinfect. for everything else..worked great. I did make the mistake of watering my plants with bottled 3% solution because I use the same dark plastic bottles to mix other solutions (the kind sold at Walmart for 85 cents). I flushed the 4 quart cont. of Foxfarm that had my plant and there was no harm. Thats what I get for playing with my plants when I am drinking.