joe_aldehyde
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aged formaldehyde soln. precipitate
is the white precipitate in the bottle paraformaldehyde? what would be the best way to depolymerize it? i fuckin googled it but there were mostly
abstracts of papers giving no details of their "superior" methods.
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S.C. Wack
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I've never heard of it becoming anything else, which dissolves on reflux with water. Was this stabilized with CH3OH?
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joe_aldehyde
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it contains 10% methanol.
i thought that depolymerization of paraformaldehyde needed at least a tiny bit of OH- ions as catalyst, no?
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DrP
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http://publish.uwo.ca/~jkiernan/formglut.htm
Don't know what it is myself, but this site reckons OH ions and heating at about 60 Degrees for the depolymerization. Any help?
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FriendlyFinger
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Joe, There is a thread at synthetikal on depolymerisation of paraformaldehyde.
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DrP
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UREA FORMALDEHYDE
I have a solution of Urea Formaldehyde polymer in water (there may be some surfactants and stabilizers as it is an industrial product). After about
4-5 months (beyond its use by date) it sets to a rubbery gel (leave it for longer and it becomes solid) - this is obviously the polymer
cross-linking, turning the stuff into something that I suppose is a bit like bakelite (phenol formaldehyde). Is there any way to reverse the
cross-linking here to 'de-set' the stuff if I catch it early enough??
My guess is - probably not as I don't think it can be done with bakelite, but what about the urea formaldehyde?
Cheers.
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