At 06:30 PM 7/24/2009, drmoonstone@aol.com wrote:
>Another name...Mustard Gas. In the 70's they banned the use of flame
>torch's for locating freon leaks...you guessed it....phosgene.
>
Mustard Gas is not Phosgene. Check out the Wikipedia entry for
discussion.
Marc
Where phosgene is found and how it is used
Phosgene was used extensively during World War I as a choking
(pulmonary) agent. Among the chemicals used in the war, phosgene was
responsible for the large majority of deaths.
Phosgene is not found naturally in the environment.
Phosgene is used in industry to produce many other chemicals such as
pesticides.
Phosgene can be formed when chlorinated hydrocarbon compounds are
exposed to high temperatures. Chlorinated hydrocarbon compounds are
substances sometimes used or created in industry that contain the
elements chlorine, hydrogen, and carbon.
The vapors of chlorinated solvents exposed to high temperatures have
been known to produce phosgene. Chlorinated solvents are
chlorine-containing chemicals that are typically used in industrial
processes to dissolve or clean other materials, such as in paint
stripping, metal cleaning, and dry cleaning.
Phosgene gas is heavier than air, so it would be more likely found in
low-lying areas.
CDC Info. Phosgene was a component added to mustard gas during WW1.
Because it was heavier than air it made the deliery of the weapon much
more deadly and effective. The bulletin we recieved from the State of
Ca. years ago indicated that the flame method of detecting freon leaks
produced Phosgene, a component used in mustard gas.
I do stand corrected for not making clear the relationship of phosgene
to mustard gas. Thanks for pointing that out.
Moonstone
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