I have recently obtained a huge cache of 1930/40 Eastman Kodak Company Nitrate Film. I have had it lectured into me about how extremely flammable this film is and how this film is able to self ignite. well curiosity got the better of me and so i took a square cm and tried to light it with an ember stick. it didn't ignite, Disappointment. So I took another square cm and this time applied raw flame it took a fraction of a second and the material ignited briefly in a lemon yellow and then the flame produced by the film went out leaving nothing but a brittle ash. so i took 4 inches of the film and lit one end of it on a gauze. the film only burnt about 3 inches before self extinguishing. Disappointment. I conducted one final test by rolling 30cm (1foot) of the film and tying it with a wire. I then lit this roll of the film. the result was stunning it lit really well burning at a good speed in a bright yellow until all the film was consumed. But it has led me to ask questions. It took me exposing the film to a naked flame to get it to ignite, and it didn't burn with explosive force like say a balloon full of hydrogen does, it wasn't a flame as vicious as say that of magnesium ribbon when you burn it. is the whole fear of this film type simply a film library driven fear when you have hundreds of reels sitting in a room? These reports I read of the film self igniting is it possible its just one reel every couple of million? like human spontaneous combustion? has anyone else here actually experimented with the combustibility of this material?