SgtAltek
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Thermal Decomposition of TCCA
Hey all! I was wondering what the products of the thermal decomposition of TCCA would be. I was thinking NCl3, but I'm not really sure. I've also
heard it can decompose to Cl2 and Cyanuric Acid.
Besides that, are there any other interesting uses for TCCA besides a Cl2 generator with HCl? I use that quite a lot to produce iodine from KI haha.
Thanks.
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gdflp
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Thread Moved
12-8-2017 at 22:12 |
CRUSTY
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Google is your friend. 
The MSDS attached lists the thermal decomposition products as chlorine, nitrogen, nitrogen trichloride, cyanogen chloride, "oxides of carbon", and
phosgene.
Cyanuric acid however, is a result of exposure to water or moisture, not thermal decomposition.
Attachment: 178537_145241928.pdf (118kB)
This file has been downloaded 3052 times
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VSEPR_VOID
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Wow, that does not sound like something we want decomposing. Considering how much labor goes into preventing terrorists from making chemical weapons,
imagine the damage that could be done with phosgene generated from TCCA. Just condense the phsogene with cold water and store it.
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Assured Fish
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Just condense the phsogene with cold water and store it
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Are you insane, phosgene for one boils at 8*C making condensation with even ice water, extremely difficult.
Then the idea of storing it, i doubt anyone would want to store it given that it exothermically decomposes on contact with water, which would drive it
to evaporate and build up pressure inside any container you have put it in. This would mean that you would need to dry the phosgene before storage and
likely store it inside an ampule.
Remember that one of the decomposition products of TCCA is H2O which makes drying an absolute necessity.
In fact phosgene is likely to only be a minor byproduct of the decomposition of TCCA which would by itself make the idea of generating phosgene from
from TCCA futile.
A better option would be to simply avoid decomposing TCCA and in the case where you needed phosgene for preparing thionyl chloride or whatever, then
it would be a far better idea (albeit and insane idea) to prepare it via the oxidation of chloroform.
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ninhydric1
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And then there's chlorine and cyanogen chloride. Chlorine I might work with, but no way in h*** will I work with cyanogen chloride. Only if I had a
respirator, oxygen tank, cyanide antidote kit, a fume hood with maximum venting ability, and quick exit from the lab would I work with cyanogen
chloride.
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nezza
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And of course NCl3 is another really benign agent. It explodes if you look at it wrong and has maimed some famous chemists in the past.
If you're not part of the solution, you're part of the precipitate.
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unionised
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The thermal decomposition products listed in MSDS are usually a guess, rather then the result of experiment.
I doubt the yield of phosgene is any good.
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VSEPR_VOID
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Quote: Originally posted by Assured Fish  |
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Just condense the phsogene with cold water and store it
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Are you insane, phosgene for one boils at 8*C making condensation with even ice water, extremely difficult.
Then the idea of storing it, i doubt anyone would want to store it given that it exothermically decomposes on contact with water, which would drive it
to evaporate and build up pressure inside any container you have put it in. This would mean that you would need to dry the phosgene before storage and
likely store it inside an ampule.
Remember that one of the decomposition products of TCCA is H2O which makes drying an absolute necessity.
In fact phosgene is likely to only be a minor byproduct of the decomposition of TCCA which would by itself make the idea of generating phosgene from
from TCCA futile.
A better option would be to simply avoid decomposing TCCA and in the case where you needed phosgene for preparing thionyl chloride or whatever, then
it would be a far better idea (albeit and insane idea) to prepare it via the oxidation of chloroform. |
My mistake, and I suppose that is a win for Humanity in general. I should have figured that if Phosgene was so easy to produce and store it would find
more of purpose in contemporary chemical weapons. I redact my earlier claim.
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