Transperancy Spray?

[georgemw at speakeasy.net]

On 30 Oct 2001, at 16:29, Reese wrote:

> At 04:52 PM 10/30/01 -0800, georgemw at speakeasy.net wrote:
> >On 30 Oct 2001, at 14:51, Sandy Sandfort wrote:
> >
> >> Mike [mmotyka at lsil.com] wrote:
> >> 
> >> > I would bet that there is SOMETHING that
> >> > is dissolved by liquid freon. Just mark
> >> > your letters with the stuff and look for
> >> > the integrity of the mark at the other end.
> >> 
> >> Or... is there something that REACTS to freon in an interesting way...?
> >> 
> >> 
> >>  S a n d y
> >> 
> >> 
> >I think freon is incredibly inert, that's why it's used.
> 
> Heat freon up enough, it turns into phosgene gas (as it breaks down
> into simpler components).  The CBR types call that Blood Agent.  
> Just think of how carbon monoxide supplants oxygen in your red blood 
> cells, that's what phosgene gas does.  I do not seem to remember the 
> critical temperature but a lit cigarette will do it.
> 
> Reese
> 
> 
Here's a link to the MSDS
http://www.ansul.com/Material_Safety_Data_Sheets/F-85312.pdf
it says above 900 F Freon will decompose into hydrochloric and
hydrofluoric acids.  Doesn't mention phosgene, although you'd
proabably get that if the air was dry enough.

George

George