Hello, SWIM is about to make his first acid/base extraction. He has been reading here in the forum for a while now and made his own little tek, some verification would be wicked!
1. ACIDIFICATION: Acidify destilled water with acetic acid (He does this until the pH turns to approx. pH 4? And for this step he'll be using sulphuric acid when he has built enough experience). He then adds the acified water to the plant parts. Let it stand for an hour or two (maybe more, can someone confirm?). Filter everything through a t-shirt and then a coffe filter. Repeat this step 2 more times to get everything out from the plant parts and then combine the acified liquids.
2. DEFAT:
Add approx. as much naphta as the acified liquid (can someone please confirm the amount?) This will be mixed together and then put into a separatory funnel and shaken (does he have to do this very gently to make sure he gets no emulasion or it doesn't matter?) Ventilate now and then to release pressure. Put in hot water bath. Discard the naphta and keep the acidified solution. Repeat 2 more times or until the naphta isn't yellowish any more.
3. BASIFY:
In the acidifed solution he then adds some sodium carbonate diluted with a tiny bit of destilled water until the pH of the whole mixture reaches 11 (would sodium carbonate work fine or should I find something else?) Being very careful here as the solution becomes very hot.
4. EXTRACTION:
Add approx. as much xylen as the basified solution (please confirm the amount). Mix carefully. Then add this mixture to the separatory funnel, as shown in step 2, mix carefully (can I shake vigorously here aswell?), vent now and then. Put in hot water bath. Keep the upper liquid (xylene) and discard the lower one. Repeat 2 times.
5. SALT:
Add destilled water acified by acetic acid (pH 4 here aswell? He'll be using HCL for this step in the future after he built up some experience) remove the water keep it, discard the xylene. Repeat twice to get everything out of the xylene. What we have now is an acidic solution containing alkaloids. I pour it out on a wide surface to let it evap faster. Now that everything has evapped he scrapes the [insert alkalid name] acetate/hcl, voila!
Please add or edit something if necessary!
It would be very wicked if you could answer all his questions as he's a complete newb:>!
He'll be starting with this extraction in the beginning of next week, and add pics etc if anyone is interested.
Worth mentioning is that the alkaloid I'll be using for my first extraction is mesembrine (from sceletium tortuosum). Anyone with experience from this alkaloid?
1. ACIDIFICATION: Acidify destilled water with acetic acid (He does this until the pH turns to approx. pH 4? And for this step he'll be using sulphuric acid when he has built enough experience). He then adds the acified water to the plant parts. Let it stand for an hour or two (maybe more, can someone confirm?). Filter everything through a t-shirt and then a coffe filter. Repeat this step 2 more times to get everything out from the plant parts and then combine the acified liquids.
2. DEFAT:
Add approx. as much naphta as the acified liquid (can someone please confirm the amount?) This will be mixed together and then put into a separatory funnel and shaken (does he have to do this very gently to make sure he gets no emulasion or it doesn't matter?) Ventilate now and then to release pressure. Put in hot water bath. Discard the naphta and keep the acidified solution. Repeat 2 more times or until the naphta isn't yellowish any more.
3. BASIFY:
In the acidifed solution he then adds some sodium carbonate diluted with a tiny bit of destilled water until the pH of the whole mixture reaches 11 (would sodium carbonate work fine or should I find something else?) Being very careful here as the solution becomes very hot.
4. EXTRACTION:
Add approx. as much xylen as the basified solution (please confirm the amount). Mix carefully. Then add this mixture to the separatory funnel, as shown in step 2, mix carefully (can I shake vigorously here aswell?), vent now and then. Put in hot water bath. Keep the upper liquid (xylene) and discard the lower one. Repeat 2 times.
5. SALT:
Add destilled water acified by acetic acid (pH 4 here aswell? He'll be using HCL for this step in the future after he built up some experience) remove the water keep it, discard the xylene. Repeat twice to get everything out of the xylene. What we have now is an acidic solution containing alkaloids. I pour it out on a wide surface to let it evap faster. Now that everything has evapped he scrapes the [insert alkalid name] acetate/hcl, voila!
Please add or edit something if necessary!
It would be very wicked if you could answer all his questions as he's a complete newb:>!
He'll be starting with this extraction in the beginning of next week, and add pics etc if anyone is interested.
Worth mentioning is that the alkaloid I'll be using for my first extraction is mesembrine (from sceletium tortuosum). Anyone with experience from this alkaloid?
And you should be able to get around PH 12.
?