Halon

The following discussion has been lifted shamelessly from
misc.emerg-services and edited slightly for space:

 From: George Goble <ghg [at] ecn__purdue__edu>
 Subject: Re: HALON
 Date: 30 Sep 90
 Organization: Purdue University Engineering Computer Network

 In article <27508.2704B95C [at] stjhmc__fidonet__org>
 Al.Stiebel [at] f440__n101__z1__fidonet__org (Al Stiebel) writes:
 >Any information yet as to research and development for a
 >replacement for Halon?
 >
 >Al

 ...

 Great Lakes Chemical, HQ in W. Lafayette, IN has announced a
 replacement for Halon-1211 I believe (think it may be called
 Halon-1508, but not sure). It also seems to work as a refrigerant I
 have heard.  Their phone number is (317) 497-6100 if you want to
 give them a call.
 --ghg


 From: Larry Lippman <larry [at] kitty__uucp>
 Subject: Re: HALON
 Summary: Halon replacement chemistry...
 Date: 30 Sep 90
 Organization: Recognition Research Corp., Clarence, NY

 ...

 "Halon" refers to a general classification of halogenated aliphatic
 hydrocarbons which are useful for fire suppression applications, and
 does not refer to a specific compound.

 With respect to environmental issues involving CFC's (chlorinated
 fluorocarbons), not all Halons are CFC's.  As an example, Halon-1301
 (bromotrifluoromethane) is not a CFC, and therefore poses no harm to
 the ozone layer.  This does not mean, however, that Halon-1301 is
 without toxicity or other potential harm.

 > Great Lakes Chemical, HQ in W. Lafayette, IN has announced
 >a replacement for Halon-1211 I believe (think it may be called
 >Halon-1508, but not sure).

 Halon-1211 (bromochlorodifluoromethane) is indeed a CFC.  However,
 the above replacement of "Halon-1508" could not be correct, unless a
 singular carbon atom has been discovered with a valence of at least 13. :-)

 Larry Lippman
 Recognition Research Corp.
 VOICE: 716/688-1231
 FAX:   716/741-9635


 From: George Goble <ghg [at] ecn__purdue__edu>
 Subject: Re: HALON
 Date: 30 Sep 90
 Organization: Purdue University Engineering Computer Network

 ...

 True, 1301 has no chlorine, but bromine does much more damage to the
 ozone layer. The "Alliance for Responsible CFC use" lists the ODP
 (ozone depletion potential) for Halon-1211 as 3.0 (three times worse
 than Freon-12).  Halon-1301 is a whopping 10.0, the highest of any
 substance I have seen.  Look for nasty taxes on Halons in '91.

 >> Great Lakes Chemical, HQ in W. Lafayette, IN has announced a replacement
 >> for Halon-1211 I believe (think it may be called Halon-1508, but not sure).
 >
 >Halon-1211 (bromochlorodifluoromethane) is indeed a CFC.  However,
 >the above replacement of "Halon-1508" could not be correct, unless a
 >singular carbon atom has been discovered with a valence of at least 13. :-)

 The "1508" was the number printed on the tank and MSDS, the formula is
 still secret since they are still working on a patent I think.  Thanks
 for pointing this out Larry.

 --ghg

                                  ***
                  Conservation DistList Instance 4:17
                  Distributed: Monday, October 1, 1990
                        Message Id: cdl-4-17-002
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