Unopened Kodachrome - Expired 1942 - WHOA

[Worker 11811]

Thanks.

 

[AgX]

Once ignited, nitrate film can not be put out by normal means. IRRC, the only chemical that can extinguish it is carbon tetrachloride. The only thing you can do, really, is to contain the fire by isolating it and letting it burn out.

The only advised means for extinguishing burning cellulosenitrate is sprayed water.

Other means which could lead to seclude the burning cellulosenitrate from air (oxygen) as fire fighting foam are strongly rejected as they can lead to production of toxic gaseous nitrogen oxides!

(In that Kodak document you linked to, is repeatedly referred at "ceiling water sprinklers" as safety means.)