RE: Uranium: ClF3, T.C.E. & P.C.E - French abbreviations

["Gee, Robert Franklin (XRF) " <XRF@ornl.gov>]

ClF^3 is chlorine trifluoride and it actually does exist.  It is listed in
Lewis' Hazardous Chemical Desk Reference and several other hazardous
material reference texts.  The CAS number is 7790-91-2 and the DOT
identification number is UN 1749.  It is described as a colorless gas to
yellow liquid, sweet odor, MP: -83C, bp: 11.8C, density 1.77g/cm3 at 13C.
It is a powerful oxidizer which reacts violently with oxidizable materials.
It undergoes violent reactions with many other materials.  Some of the other
descriptions I have seen posted are correct in describing its use in the
gaseous diffusion process.

Robert Gee
Lockheed Martin Energy Systems

> -----Original Message-----
> From:	Franz Schoenhofer [SMTP:schoenho@via.at]
> Sent:	Friday, August 20, 1999 1:21 PM
> To:	Multiple recipients of list
> Subject:	Re: Uranium: ClF3, T.C.E. & P.C.E - French abbreviations
> 
> At 09:11 20.08.1999 -0500, you wrote:
> >Thank you all who responded to abbreviations question. The TCE and PCE
> have 
> >definitely been clarified - regarding the ClF3 it was unclear to me
> whether 
> >the "C" was referring to carbon or if it was to be read "Cl" (chlorine)
> to 
> >be interpreted as a "tetra" compound (1 chlorine and 3 fluorine atoms) 
> >centered around a "leftout" carbon.
> >
> >Bjorn Cedervall
> >bcradsafers@hotmail.com
> >
> 
> Carbon is tetravalent, therefore CF3 cannot exist. ClF3 cannot exist
> either
> because both Cl and F form negative ions only. Monochlorotrifluorocarbon
> CClF3 can exist, but I would believe that it is rather inert - maybe I am
> wrong. Sorry, the only help I can give is that it cannot be CF3 and ClF3.
> 
> Franz
> 
> 
> Franz Schoenhofer
> Habicherg. 31/7
> A-1160 Vienna
> Austria
> Tel.: +43-1-495 53 08
> Fax.: same number
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> e-mail: schoenho@via.at
> 
> Office:
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> e-mail: schoenhofer@baluf.via.at
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