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good afternoon everyone, I have 6kg of ephedrine, I have already started doing the tests through the hypophosphorous route, the acid that I have is at 80%, okay? or at what concentration should it be?
After doing the whole process, at the end the oil was separated from the aqueous part, the yellow methamphetamine oil and a brown-colored layer was also formed, I separated with toluene and the brown color disappeared, I decanted and then I started the crystallization with HCL in gas, I lowered it to a ph of 5 and nothing happened, I kept lowering the ph until it reached zero and a very dense layer was formed at the bottom, I placed it on a rotaevaporator for an hour to remove it the toluene and after removing the ball from the rotaevaporator it became like a slush, I waited for it to dry for 24 hours and it was still wet, I don't know what I was wrong but I could not crystallize the goal, it would be of great help if you could explain to me where was I wrong, thank you very much
After doing the whole process, at the end the oil was separated from the aqueous part, the yellow methamphetamine oil and a brown-colored layer was also formed, I separated with toluene and the brown color disappeared, I decanted and then I started the crystallization with HCL in gas, I lowered it to a ph of 5 and nothing happened, I kept lowering the ph until it reached zero and a very dense layer was formed at the bottom, I placed it on a rotaevaporator for an hour to remove it the toluene and after removing the ball from the rotaevaporator it became like a slush, I waited for it to dry for 24 hours and it was still wet, I don't know what I was wrong but I could not crystallize the goal, it would be of great help if you could explain to me where was I wrong, thank you very much
↑View previous replies…
GhostBlackAll you had to do was separate the fb oil from the caustic water in. A sep funnel wash the fb oil with equal amount of dh20 discard the dh20 then add equal amount of anhydrous acetone tritate with hcl acid til pH was 5.8 add 1ml of dh20 to every gram of meth hcl then evap before you get a skim on top t put it in a dark cupboard and let nature do its thing no need to gas and make things difficult
GhostBlackI just read this properly pH 0 big no no you have to freebase it again and your going to loose product also from looking at your beaker you have belted it when doing distillation and brought caustic over with your oil when doing Distillation wether simple or steam no further than a quarter of the way down the condenser you vapor pressure ok slow and steady wins the race here patients
Also your not going to make ice buy gassing the product you will make white powder which has to be filterd washed with anhydrous acetone then recrystallized with dh20 or solvent
GhostBlackThe ph level should not fall below 5.8, re-extract the pH with sodium hydroxide to 13 again And carefully crystallize
If hcl gas doesn't work, try this:
Put the toluene layer in a beaker and add an equal amount of pure water, carefully add dropwise hcl to pH 5.8 (when measuring pH, measure the water layer, not the toluene layer)
Shake vigorously for a long time and separate the layer of water, evaporating the water
Sorry for bad eng
- Joined
- Apr 29, 2023
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good afternoon everyone, I have 6kg of ephedrine, I have already started doing the tests through the hypophosphorous route, the acid that I have is at 80%, okay? or at what concentration should it be?
After doing the whole process, at the end the oil was separated from the aqueous part, the yellow methamphetamine oil and a brown-colored layer was also formed, I separated with toluene and the brown color disappeared, I decanted and then I started the crystallization with HCL in gas, I lowered it to a ph of 5 and nothing happened, I kept lowering the ph until it reached zero and a very dense layer was formed at the bottom, I placed it on a rotaevaporator for an hour to remove it the toluene and after removing the ball from the rotaevaporator it became like a slush, I waited for it to dry for 24 hours and it was still wet, I don't know what I was wrong but I could not crystallize the goal, it would be of great help if you could explain to me where was I wrong, thank you very much
View attachment 19993
- Joined
- Apr 29, 2023
- Messages
- 79
- Reaction score
- 40
- Points
- 18
good afternoon everyone, I have 6kg of ephedrine, I have already started doing the tests through the hypophosphorous route, the acid that I have is at 80%, okay? or at what concentration should it be?
After doing the whole process, at the end the oil was separated from the aqueous part, the yellow methamphetamine oil and a brown-colored layer was also formed, I separated with toluene and the brown color disappeared, I decanted and then I started the crystallization with HCL in gas, I lowered it to a ph of 5 and nothing happened, I kept lowering the ph until it reached zero and a very dense layer was formed at the bottom, I placed it on a rotaevaporator for an hour to remove it the toluene and after removing the ball from the rotaevaporator it became like a slush, I waited for it to dry for 24 hours and it was still wet, I don't know what I was wrong but I could not crystallize the goal, it would be of great help if you could explain to me where was I wrong, thank you very much
View attachment 19993
Also your not going to make ice buy gassing the product you will make white powder which has to be filterd washed with anhydrous acetone then recrystallized with dh20 or solvent
- Joined
- Feb 4, 2023
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good afternoon everyone, I have 6kg of ephedrine, I have already started doing the tests through the hypophosphorous route, the acid that I have is at 80%, okay? or at what concentration should it be?
After doing the whole process, at the end the oil was separated from the aqueous part, the yellow methamphetamine oil and a brown-colored layer was also formed, I separated with toluene and the brown color disappeared, I decanted and then I started the crystallization with HCL in gas, I lowered it to a ph of 5 and nothing happened, I kept lowering the ph until it reached zero and a very dense layer was formed at the bottom, I placed it on a rotaevaporator for an hour to remove it the toluene and after removing the ball from the rotaevaporator it became like a slush, I waited for it to dry for 24 hours and it was still wet, I don't know what I was wrong but I could not crystallize the goal, it would be of great help if you could explain to me where was I wrong, thank you very much
View attachment 19993
If hcl gas doesn't work, try this:
Put the toluene layer in a beaker and add an equal amount of pure water, carefully add dropwise hcl to pH 5.8 (when measuring pH, measure the water layer, not the toluene layer)
Shake vigorously for a long time and separate the layer of water, evaporating the water
Sorry for bad eng
↑View previous replies…
GhostBlackTry cleaning the crystals:
Place the filter paper in a glass funnel and spread all the crystals in a thin layer of powder on the filter paper, Then wash your crystals with anhydrous acetone and then dry them
If there are still impurities, the reaction during the construction is infected with too many impurities, try the Moscow route
GhostBlackFor crystals in the form of glass:
After the cleaning phase is over, dissolve the methamphetamine powder in as little alcohol as possible and then wait for the alcohol to evaporate.
GhostBlack
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- By B.d.p.n.e
ok, I understand you, the most curious thing is that I crystallized very ugly, so I do a recrystallization?
Another little thing, when I began to place HCl in gas, I could see very little white precipitate when reaching ph 6.0. The formation of crystals occurs by putting the solution in the freezer or how?
View attachment 19996 View attachment 19994
Place the filter paper in a glass funnel and spread all the crystals in a thin layer of powder on the filter paper, Then wash your crystals with anhydrous acetone and then dry them
If there are still impurities, the reaction during the construction is infected with too many impurities, try the Moscow route
- Joined
- Feb 4, 2023
- Messages
- 35
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- 34
- Points
- 18
- Deals
- 2
ok, I understand you, the most curious thing is that I crystallized very ugly, so I do a recrystallization?
Another little thing, when I began to place HCl in gas, I could see very little white precipitate when reaching ph 6.0. The formation of crystals occurs by putting the solution in the freezer or how?
View attachment 19996 View attachment 19994
After the cleaning phase is over, dissolve the methamphetamine powder in as little alcohol as possible and then wait for the alcohol to evaporate.
G.Patton
Expert
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ok, I understand you, the most curious thing is that I crystallized very ugly, so I do a recrystallization?
Another little thing, when I began to place HCl in gas, I could see very little white precipitate when reaching ph 6.0. The formation of crystals occurs by putting the solution in the freezer or how?
View attachment 19996 View attachment 19994
Hi, sorry for a long reply. Do you mean big crystals? You need separate d-Meth and then crystallize it.The formation of crystals occurs by putting the solution in the freezer or how?