ABE
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Anhydrous Formaldehyde - Methods to Produce
From what I have found online and in literature 1,3,5-trioxane seems to be the only way to accomplish this (anhydrous formaldehyde). Paraformaldehyde
seemed to have potential but I couldn't figure out a known method. Im sure there are other ways, and I welcome any information on simpler methods that
you may know of.
Anyway from what I know 1,3,5-trioxane will require ~200C heating passed through an electron rich compound/catalyst, I read AlCl3, I remember there
being a need for a phosphorus (#-oxide I presume?) at one stage in this set up, but am not sure when or even why this would be needed. Anyway in the
end it should come off as a pure gas stream of heated monomeric formaldehyde. I will be running a test similar to what I explained above and run the
exhaust gas through a bubbler and test the liquid for formaldehyde content to see if the process worked at all.
But any extra, more precise info on the subject or even perhaps a simpler overall method would be very helpful, thank you for the help!
-Andy
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Magpie
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http://www.sciencemadness.org/talk/viewthread.php?tid=65281#...
The single most important condition for a successful synthesis is good mixing - Nicodem
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ABE
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I remember reading this thread a bit ago when I was figuring things out, thanks for the link. The only problem for me is I don't have a tube furnace
with precise temperature measurements....do you know where I could get one for decently cheap price Magpie??
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Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
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No, ebay would be my only suggestion. Or you could build one yourself. But I'm not saying it would be cheap.
The single most important condition for a successful synthesis is good mixing - Nicodem
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