RoundBottom (Hive Addict)
09-08-03 02:27
No 457660
      Q: recovering MeAm infused MeOH from Al/Hg  Bookmark   

how does one recover MeOH from the basified remains of a AlHg workup?

after basifying with aq. NaOH, and extracting with toluene, you are left with a solution of MeOH, H2O, and sludge.  filter out the sludge.

now, how does one distill the MeAm infused MeOH from the H2O and MeOH azetrope (as recommended by Osmium in his MeAm writeup? (../rhodium /alhg.osmium.html)

Now with 12% more Bottom!
Nymphomania is not a disease, its a goal! (Methadist)
 
 
 
 
    abolt
(Hive Addict)
09-08-03 06:28
No 457691
      Don't Basify  Bookmark   

Don't Basify.

- After Adding Nitro/MeNH2, add a little solid NaOH to speed up
- Let sludge settle
- Filter off sludge
- Distill Off Methanol/Methylamine(Bottle & Re-use)
- Add dilute Hcl to leftover residue until ~P.H. 3
- Do 3x N/P washes
- Basify
- Take up in N/P, Gas, recrystallise, dry, Send sample to aboltsmile

how does one distill the MeAm infused MeOH from the H2O and MeOH azetrope (as recommended by Osmium in his MeAm writeup?

Methanol and Water have no azeotrope, check page 8 of this link:

http://www.methanex.com/methanol/Methanex_TISH_Guide.pdf

(Rhodium, this link has excellent info on the properties of Methanol. You might consider putting it on your page.)

Just keep your distillation temp below 80.Celcius.wink

Read and learn: http://www.polyarchy.org/
 
 
 
 
    RoundBottom
(Hive Addict)
09-08-03 22:49
No 457758
      too late  Bookmark   

too late for all the stored up remains SWIM has been holding on to.

Now with 12% more Bottom!
Nymphomania is not a disease, its a goal! (Methadist)
 
 
 
 
    Rhodium
(Chief Bee)
09-09-03 00:16
No 457779
      Methanol Doc Archived  Bookmark   

I have archived the document linked above at my page:

Technical Information & Safe Handling Guide for Methanol (../rhodium/pdf /chemical-data/methanol.technical.info.pdf)