Recently a friend of mine asked me, if I know how to neutralize THC in plant material. He probably wanted to get rid of the drug, I didn;t ask him that. I have forgotten it but it raised a question in my mind and I do not like questions unanswered. So I ask this questions: If I want to neutralize canabinoids in a plant, do I have to dissolve them, first? I probably do not need to do that, because if the plant is very dry, it will soak quickly. After quite a couple of searches I found out, that chromate, nitrite, oxone, and hydrogen peroxide/ferrous ammonium sulfate are things that can do the job properly. But the information was, that they destroy metabolites of canabinoids in urine samples and there was no time mentioned or if these things can react with original THC and other canabinoids in the dry plant. I would very much like to know, what chemicals react best with canabinoids, why is that so, how fast it reacts with these terpenoids, what are the outcomes of these reactions, which are gasses, if it is exotermic and generally I would love to see the actual reactions. Please, if anyone is skilled enough, I think it will be an easy task to post a professional answer to at least some of these questions.