On Nov 19, 2005, at 2:51 PM, Scott Loveless wrote:
Thanks for the correction, Bob. I actually did a bit of googling, instead of just recalling from memory, and found that the Cellulose acetate has an ignition temp of 800F and the Estar base 900F. I'm assuming the cellulose nitrate ignited at much lower temperatures.
It isn't so much that cellulose nitrate has a low combustion temperature, but that it decomposes in storage and the byproducts of this decomposition tend to spontaneously combust. So a closet full of old nitrate film was like a ticking time bomb.
Bob