ISCGora
Harmless
Posts: 47
Registered: 10-3-2015
Member Is Offline
Mood: No Mood
|
|
Concentrating H2O2
I know many people use boiling off water method which is not really ideal, but I've known the method of freezing(freeze the water that is contained in
3%solution and you get a block of ice and H2O2) for a while but wasn't sure what was the final concentration on H2O2.
Thanks!
|
|
|
Molecular Manipulations
Hazard to Others
Posts: 447
Registered: 17-12-2014
Location: The Garden of Eden
Member Is Offline
Mood: High on forbidden fruit
|
|
Boiling it down is better than freezing it out as far as yids are concerned. I think 15% w/w is the best you can get from freezing.
-The manipulator
We are all here on earth to help others; what on earth the others are here for I don't know. -W. H. Auden
|
|
|
BromicAcid
International Hazard
Posts: 3248
Registered: 13-7-2003
Location: Wisconsin
Member Is Offline
Mood: Rock n' Roll
|
|
Search
Search
Search
And search some more. Probably one of the top 15 topics covered on this forum involves ways to concentrate peroxide.
|
|
|
hissingnoise
International Hazard
Posts: 3940
Registered: 26-12-2002
Member Is Offline
Mood: Pulverulescent!
|
|
For hydrogen peroxide of 35% conc., I'm inclined to follow the path of least resistance!
|
|
|
vmelkon
National Hazard
Posts: 669
Registered: 25-11-2011
Location: Canada
Member Is Offline
Mood: autoerotic asphyxiation
|
|
Personally, I tried with evaporating instead of boiling. I would heat it to 80 to 90 C and let it sit until cool and repeat. Density went from 1.00
g/cm3 to 1.07 / 1.08.
Signature ==== Is this my youtube page? https://www.youtube.com/watch?v=tA5PYtul5aU
We must attach the electrodes of knowledge to the nipples of ignorance and give a few good jolts.
Yes my evolutionary friends. We are all homos here. |
|
|
DFliyerz
Hazard to Others
Posts: 241
Registered: 22-12-2014
Member Is Offline
Mood: No Mood
|
|
I just stuck a bottle of 3% hydrogen peroxide in the freezer for a while, and I actually got a small flow of liquid as soon as I took it out of the
freezer. It certainly seemed pretty viscous compared to water, and when added to a beaker containing 31.45% hydrochloric acid and some copper it
heated up and reacted the copper pretty quickly.
|
|
|
ISCGora
Harmless
Posts: 47
Registered: 10-3-2015
Member Is Offline
Mood: No Mood
|
|
Thanks for info.Yesterday I used two batches of 1L(3%)
First one i used evaporation and after I tested it it was very near 10M.Which is pretty good
Second one I used freezing didn't work out so well it was something like 4M which is far worst.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
