Sciencemadness Discussion Board
Not logged in [Login - Register]
Go To Bottom

Printable Version  
Author: Subject: Chloroform from the electrolysis of brine and acetone
Big Boss
Harmless
*




Posts: 33
Registered: 17-7-2015
Location: Outer Heaven
Member Is Offline

Mood: No Mood

[*] posted on 12-7-2018 at 18:36
Chloroform from the electrolysis of brine and acetone


I am wondering if it's possible to create a chloroform generator via an in situ haloform reaction between the generated hypochlorite in a brine electrolysis cell.

I have tried this myself, I made up a conc. NaCl solution and added 50mL of ethanol to it after a few hours. Instantly the smell of bleach disappeared and the solution turned slightly cloudy, it also smelled faintly of chloroform.
It's been 5 days now and the only change I've noticed is a fine white precipitate at the bottom of the cell, I assume this is Na2CO3. I was initially confident because I assumed the cell would first need to generate enough chloroform to saturate the water, then it would start forming at the bottom.
Any ideas on why this isn't working? I found a few pdf's on google that mention the preparation of iodoform and bromoform via a similar method, however they mention that they neutralize any generated NaOH with CO2 gas.

[Edited on 13-7-2018 by Big Boss]




Kept you waiting, huh?

View user's profile View All Posts By User
ausnewbie
Harmless
*




Posts: 8
Registered: 21-5-2018
Member Is Offline


[*] posted on 12-7-2018 at 18:47


Hi BB,

Im sure I saw something on this quite recently - With a well resoned explaination as to why it was hard ( if not impossible) - The nuances escape me at the moment. :-)

Here you go..

https://www.sciencemadness.org/whisper/viewthread.php?tid=83...


And a few others that may help fill in some gaps...

AN

https://www.sciencemadness.org/whisper/viewthread.php?tid=83...

https://www.sciencemadness.org/whisper/viewthread.php?tid=20...

https://www.sciencemadness.org/whisper/viewthread.php?tid=71...

https://www.sciencemadness.org/whisper/viewthread.php?tid=61...
View user's profile View All Posts By User
Big Boss
Harmless
*




Posts: 33
Registered: 17-7-2015
Location: Outer Heaven
Member Is Offline

Mood: No Mood

[*] posted on 12-7-2018 at 19:04


From what I've read on this it sounds like this fails because of side reactions that destroy the acetone/interfere with HClO- production before it can further react to form chloroform.

If that's the case, maybe this can be done by keeping a constant excess of the hypochlorite, adding measured amounts of acetone each day.




Kept you waiting, huh?

View user's profile View All Posts By User
highjumptrust
Harmless
*




Posts: 2
Registered: 15-7-2018
Member Is Offline


[*] posted on 15-7-2018 at 07:12


I bought a E-Hybrid Panamera S 2 years ago. I love its fuel efficiency. Its the best sports-sedan i ever seen.

But, now a days i am facing problem with my V6 Engine. Will anyone suggest me how to customize the electric motor to improve its parformance?:):mad:
View user's profile View All Posts By User
Big Boss
Harmless
*




Posts: 33
Registered: 17-7-2015
Location: Outer Heaven
Member Is Offline

Mood: No Mood

[*] posted on 15-7-2018 at 09:33


I gave up on this cell today, I lost track of how many days it's been running for but I decided to distill it just to see if I would recover anything. About 100mL of liquid came over before 98C, it's a clear colour and it vaguely smells of fruit, when I give it a deeper smell I can feel it strongly in the back of my throat. This could be mostly comprised of ethanol and water but there's a small oily yellow layer floating on the surface also. I have no ideas, I'm going to further distill this to hopefully find its boiling point.

[Edited on 15-7-2018 by Big Boss]




Kept you waiting, huh?

View user's profile View All Posts By User
highjumptrust
Harmless
*




Posts: 2
Registered: 15-7-2018
Member Is Offline


[*] posted on 16-7-2018 at 07:56


(Advertisement for name brand cannabis varietal removed from here)


[Edited on 7-16-2018 by Bert]
View user's profile View All Posts By User
Big Boss
Harmless
*




Posts: 33
Registered: 17-7-2015
Location: Outer Heaven
Member Is Offline

Mood: No Mood

[*] posted on 16-7-2018 at 16:07


It appears I have formed 2 or more products from this electrolysis. Both of which remain a mystery.
They are both colourless liquids, the first has a bp of 98.7C and a density of 0.981. It isn't flammable.
The other, has a bp of 97C and a density of 0.871 but I don't think this is ethanol, it stayed at 97C and it smells really strange, a chemical fruit smell. This one is flammable and burns like alcohol with a blue flame.

Their densities don't suggest they're chlorinated, safe to say this reaction doesn't produce chloroform but it's interesting nonetheless. The initial electrolysis mixture, when distilled first changed colour from clear, to yellow, to red then finally a brown/black which suggests acetaldehyde formed polymerized crap.




Kept you waiting, huh?

View user's profile View All Posts By User
Hunterman2244
Harmless
*




Posts: 40
Registered: 6-6-2018
Member Is Offline


[*] posted on 17-7-2018 at 07:09


Could you add hydrogen peroxide to produce the hypochlorite ion? Before adding acetone obviously.
View user's profile View All Posts By User

  Go To Top