I would like to inform everybody that i am not in any rp business, i have achieved, satisfied and happy.. Some people are really worried and crying from yesterday fake video cheating video, i have stopped supplying technology or selling chemicals baba. I understand that some people want technology details. Some are saying nitric acid, some are saying sulphuric acid oh my god.. Sulphuric acid H2SO4 is 50% correct, take out one oxygen atom, you will get H2SO3 Sulphurous acid. This is correct starting material, it is a acid which vapourises in room temperature and fires match stick from 3 inch distance. Ok think and make the ink. I took only 24 hrs to make it. Nowadays trend has changed, paper pulp is mixed with sulphur compound and hydride which radiates H2 and sulphurdioxide immediately when wetted with water for some time. Let the scratch fire ink with red phosphorus be as it is, so you get 2 functions