Hawkguy
Hazard to Others
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 326
Registered: 10-10-2014
Location: British Columbia (Canada eh!)
Member Is Offline
Mood: Body is Ready
|
|
MEKP Problem/ Bad MEK?
Alright. So recently I bought a bunch of Recochem MEK. However, my MEKP synthesese have been unsuccessful. My product has been a white powder that is
collected after the the remaining MEK from the two day old Acid/ Peroxide solution is evaporated. What the heck is going wrong? My MEK has worked semi
satisfactorily for most other projects...
|
|
Hawkguy
Hazard to Others
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 326
Registered: 10-10-2014
Location: British Columbia (Canada eh!)
Member Is Offline
Mood: Body is Ready
|
|
ADDITIONAL NOTES: The MEKP synthesese have been done at a range of temperatures so far, from -7 ish Celsius to plus 10...
|
|
PHILOU Zrealone
International Hazard
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 2893
Registered: 20-5-2002
Location: Brussel
Member Is Offline
Mood: Bis-diazo-dinitro-hydroquinonic
|
|
If your MEK, H2O2 and acid don't leave white residue appart of each other form evaporation...then the white stuff must be MEKP!
PH Z (PHILOU Zrealone)
"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
|
|
NedsHead
Hazard to Others
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 409
Registered: 9-12-2014
Location: South Australia
Member Is Offline
Mood: No Mood
|
|
You're still having mekp troubles Hawkguy, have you looked up the msds for all your reagents?
You shouldn't be having so much difficulty with Such a simple synthesis, I also wouldn't have thought that recochem mek would be the issue.
Where is your hydrogen peroxide and acid from?
Edit: I found the msds for recochem MEK and at a glance it looks fine
[Edited on 11-6-2015 by NedsHead]
Attachment: 227478R2a.PDF (207kB) This file has been downloaded 386 times
|
|
Hawkguy
Hazard to Others
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 326
Registered: 10-10-2014
Location: British Columbia (Canada eh!)
Member Is Offline
Mood: Body is Ready
|
|
The msds says that the stuff is 100%. The Hydrogen Peroxide is 7+%, from Oxygen Bleach, I think it was nature clean or 7th gen or something. My acid
was from Muriatic Acid.
|
|
NedsHead
Hazard to Others
![*](images/xpblue/star.gif) ![*](images/xpblue/star.gif)
Posts: 409
Registered: 9-12-2014
Location: South Australia
Member Is Offline
Mood: No Mood
|
|
So your MEK is known, the muriatic acid is fine and can be replaced with sulphuric. The only unknown is the h2o2, I would be going down to the nearest
hydroponic shop and buying a fresh bottle of high% hydrogen peroxide
|
|