CHATPRIVACYDONATELOGINREGISTER
DMT-Nexus
FAQWIKIHEALTH & SAFETYARTATTITUDEACTIVE TOPICS
How does acetone (polar solvent) pull freebase from Na2CO3? Options
 
dogsoldier
#1 Posted : 6/18/2019 9:39:33 PM

It's not what we do, it's how we do it.

New member

Posts: 22
Joined: 15-May-2019
Last visit: 31-Jul-2019
I am planning my first extraction: vinegar simmer -> lye -> toluene -> vinegar wash -> sodium carbonate -> acetone -> evap over leaf
I think I understand everything except the final pull: we will put the acetates into the sodium carbonate in order to basify them, which makes them non-polar, but then how does the acetone pull them out, since acetone is a polar solvent?
Thank you!
 

STS is a community for people interested in growing, preserving and researching botanical species, particularly those with remarkable therapeutic and/or psychoactive properties.
 
Jagube
#2 Posted : 6/18/2019 11:11:24 PM

DMT-Nexus member


Posts: 611
Joined: 18-Feb-2017
Last visit: 13-Oct-2019
Location: Floresta
Acetone dissolves both polar and non-polar solutes, because it has both polar and non-polar parts.
It has two methyl groups, which are non-polar, but it also has a polar carbonyl (C=O) group, which can solvate more polar compounds.
 
dogsoldier
#3 Posted : 6/18/2019 11:21:05 PM

It's not what we do, it's how we do it.

New member

Posts: 22
Joined: 15-May-2019
Last visit: 31-Jul-2019
Jagube wrote:
Acetone dissolves both polar and non-polar solutes, because it has both polar and non-polar parts.
It has two methyl groups, which are non-polar, but it also has a polar carbonyl (C=O) group, which can solvate more polar compounds.

Interesting! Why can't we use acetone for the initial pulls from the lye soup then?
 
Jagube
#4 Posted : 6/18/2019 11:39:54 PM

DMT-Nexus member


Posts: 611
Joined: 18-Feb-2017
Last visit: 13-Oct-2019
Location: Floresta
dogsoldier wrote:
Interesting! Why can't we use acetone for the initial pulls from the lye soup then?

Acetone is miscible with water. This is due to its polar group, which creates hydrogen bonds with water.

The lye soup is an aqueous system. If you add acetone to it, it will mix with the water, which will make it impossible to pull anything. To pull anything you need two separate layers (e.g. two liquids, or a liquid and solids).

You can only pull with acetone from dry material, which is what you do in the second pull stage, after the sodium carbonate basing. If your acetone is not anhydrous (i.e. free from water), it will pick up some of the sodium carbonate, as well as sodium acetate (resulting from the neutralization reaction of the sodium carbonate with the acetic acid) and whatever other water-soluble things might be in there.

P.S. I'm not a chemist and I'm only learning and trying to understand this, so those more knowledgeable please feel free to correct me.
 
dogsoldier
#5 Posted : 6/19/2019 12:14:58 AM

It's not what we do, it's how we do it.

New member

Posts: 22
Joined: 15-May-2019
Last visit: 31-Jul-2019
Jagube wrote:
dogsoldier wrote:
Interesting! Why can't we use acetone for the initial pulls from the lye soup then?

Acetone is miscible with water. This is due to its polar group, which creates hydrogen bonds with water.

The lye soup is an aqueous system. If you add acetone to it, it will mix with the water, which will make it impossible to pull anything...


Of course, the water! Thanks man, I'm ready to roll now!
 
 
Users browsing this forum
Guest

DMT-Nexus theme created by The Traveler
This page was generated in 0.012 seconds.