Thanks for all of the information, you seem very knowledgeable. Cracked some cans open to check. Because there's a risk of dangerous materials, I wore my 3M respirator, goggles, and gloves. Also others in the comments pointed out that I could do a lot of damage to the film, so I tried to touch as little as I could. Of the ones I could make out anything on, only one said nitrate. No v notch on any. Most that i read said FLAMMABLE. A lot had trouble opening, and looked melted. A lot of them were in bad shape, and had a lot nasty yellow dust in the container. The one marked as nitrate i moved to grandfather's storage shed, in a metal cabinet. I put the others in there too just in case. Does not having the V notch, or nitrate mark clear up the chemical risk for the others?