wimpy (Stranger)
05-31-04 19:23
No 510551
      Formaldehyde     

SWIM is thinking about how to obtain a little Formaldehyde - if he got for example a solution of 13,0 g Formaldehyd, 3,6 g Glyoxal, 3,2 g Glutaral  per 100g, how could the Formaldehyd be separated from the two other ingredients - destillation is the only thing SWIM can think of, but if formaldehyde has a boiling point of around minus 20 degree of Celsius ...
(bp Glutaral 72C, Glyoxal 51C , as far as i know)
Has anyone experiences with something like this (or maybe any idea or suggestion)?
Thanks

- Beware of the Morphail Effect! -
 
 
 
 
    ning
(acetaminophanatic)
06-03-04 04:36
No 511136
      You would somehow catch it     

for example, by bubbling it through methanol or water to make formalin solution, perhaps.

We'll all meet someday...on the other side
 
 
 
 
    wimpy
(Stranger)
06-05-04 18:21
No 511631
      thanks!     

Thanks ning, that seems to be at least worth a try :)

- Beware of the Morphail Effect! -
 
 
 
 
    Nicodem
(Hive Bee)
06-05-04 19:42
No 511651
      I can't remember exactly how, but formaldehyde     

I can't remember exactly how, but formaldehyde solution can bee made to polymerize into paraformaldehyde (which is even more usefull, BTW). I think adding a few drops of HCl or H2SO4 should precipitate the paraformaldehide. Filter, wash and dry it. Glyoxal and glutaral might also polymerize (I don't know) but since they are lesser components and probably form more polar stuff I think you can wash them out of paraformaldehyde with water.

“The real drug-problem is that we need more and better drugs.” – J. Ott
 
 
 
 
    wimpy
(Stranger)
06-08-04 13:49
No 512179
      thanks!     

Thanks Nicodem, should be worth a try, too. I guess that should also work with Formalin Solution (35%) ? Just asking, SWIw managed to obtain about 900ml of that, if i'm lucky he will give me some if i ever decide to work with it wink

- Beware of the Morphail Effect! -