BASF - 14-11-2005 at 13:15
My problem is: I cannot get my hands on normal 37% formaline solution because this would call for a poison permit and lots of paperwork for a private
person here.
On the other hand, 20% formaline solution can easily be bought in a drugstore or anywhere else, as the lower concentration is considered less toxic...
I don´t know what happens if i would just attempt to boil it down? - Would it polymerize? Could i, possibly, remove water by azeotropic distillation?
Please help!
[Edited on 14-11-2005 by BASF]
unionised - 15-11-2005 at 13:03
http://www.itt.uni-stuttgart.de/pdfs/2003_ott_cep_dist.pdf
More than you ever want to know about distillation of formaldehyde solutions.
BASF - 15-11-2005 at 13:21
Hey! -Thanks a lot!!
S.C. Wack - 15-11-2005 at 15:31
Perhaps vacuum distillation would be best for removing water. I just let my dilute solution sit in a really big glass bowl until the water evaporated
completely. From there you can make any strength you want.
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