[AMPS] Alert-- ptfe does NOT give phosgene

[Bill Aycock]

>Date: Sat, 15 Jan 2000 16:52:17 -0600
>To: measures <measures@vcnet.com>amps
>From: Bill Aycock <baycock@HIWAAY.NET>
>Subject: Re: [AMPS] Alert-- ptfe does NOT give phosgene
>In-Reply-To: <200001151958.NAA05566@mail.HiWAAY.net>
>
>Rich- there may be confusion with the name "carbon tetra-chloride", the
old- (now forbidden) fire extenguisher liquid. the name for Teflon is "Poly
tetra-fluoro ethylene" (hence, PTFE). The old carbon-tet DID produce
Phosgene, but not on sublimation, on decomposition at elevated temperature.
>
>If the plastics co. you referenced DID put out such a hand-out- I'm very
glad I dont have to rely on them for technical support.
>
>Bill- W4BSG
>
>At 12:02 PM 01/15/2000 -0700, you wrote:
>>>
>>>Teflon- does NOT have any chlorine (Cl) in it, and cannot give Phosgene
>>>when it breaks down. The halogen element on Teflon (PTFE) is fluorine, and,
>>>in elemental form, makes Phosgene look like candy.
>>>
>>>The breakdown temp of PTFE is in the order of 440 C. which is pretty hot.
>>>
>>thanks, Bill.  The info on Teflon producing phosgene during sublimation 
>>came from a handout at American Plastics Co in Camarillo, CA.  
>>
>>-  Rich..., 805.386.3734, www.vcnet.com/measures.  
>>
>>
>>
-
Bill Aycock   ---   Persimmon Hill 
 Woodville, Alabama, US 35776
 (in the N.E. corner of the State)
      W4BSG   --   Grid EM64vr
        baycock@HiWAAY.net
             w4bsg@arrl.net

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