QuadList Digest, Vol 93, Issue 3

[David Keleshian]

Hello Group
 With regard to Nitrate film, if it is stable, it has a flash point approximately the same as a piece of paper. 

 But decomposed nitrocellulose is extremely dangerous. And nitrocellulose, when decomposing, releases nitric acid which further catalyzes the decomposition. The decomposed film does not have a particular odor. The decayed film will turn into a rust colored powder which is extremely flammable and almost impossible to extinguish as the reaction of burning releases it's own oxygen. 
 If you find old film, and it smells of vinegar, it is triacetate or "safety film". 

 Yours Truly David Keleshian former telecine colorist 
 CBS Television City.


  
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