Early celluloid base films DO NOT AUTO IGNITE.  They do bur nicely however.  
The combustion is 
initiated by the heat produced from the projector arc lamp falling on a single 
frame of the film for 
several seconds.  This condition is a film transport failure and was / is not 
that uncommon of an 
event.  Any nitro cellulose based plastic ( common name was celluloid) will 
burn when exposed to 
high heat or open flame.

Do not expose celluloid cylinders (blue / purple amberols, indestructibles, 
lamberts, liorets...) to 
open flame or high heat.


On Sun, 26 Nov 2006 23:48:25 +0100, Norman Bruderhofer wrote:

>Just something that's been bothering my mind for several years:

>We all know about the high risk of auto ignition with early celluloid 
>films. Does anyone know if there is a certain risk with celluloid 
>cylinders (blue / purple amberols, indestructibles, lamberts, liorets 
>...)? So far, I have never heard of any incident with cylinders.

>Referring to http://en.wikipedia.org/wiki/Film_base the nitrate 
>compound was the major problem. I am not really into chemistry and 
>would be happy if anyone with further knowledge could post some 
>statements about this as I would like to know it for sure.

>Regards,
>Norman

>]] Before anything else, preparation is the key to success. 
>-Alexander Graham Bell (1847-1922) [[




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