Hello,
After many tests using Methylamine HCL based on this method I will share the best way that I found to obtain Methamphetamine freebase in big scale:
- Fill the reactor with the 14 L of Methanol
- With stirring dissolve the Methylamine HCL
- Put the reactor temp at 0C(not the mixture temp) and add the NaOH, the temp will increase
- Once the temp come back to 20C add the P2P, the temp will increase stir it during 45min-1 hour
- Add 252gr of anhydrous sodium sulfate
- When the mixture temp arrives to 8C start adding portionwise the NaBH4 not exceeding the 20C
- Once all the NaBH4 has been added let it mixing under 20C during aprox 2 hours until the mixture stops bubbling
- Add the water and continue mixing during 5 min
- Add the DCM and mix it during 10 min
- Stop stirring and let layers get separated
- Keep the bottom layer and discard the upper one( not profitable to extract this aqueous phase)
- Add 200gr of anhydrous sodium sulfate to the saved layer and mix it
- Filter it in Buchner Funnel
- Evaporate the DCM
- Clean and smelly Methamphetamine freebase obtained
;-)
After many tests using Methylamine HCL based on this method I will share the best way that I found to obtain Methamphetamine freebase in big scale:
- 966 gr P2P
- 14 liters Methanol
- 1183 gr Methylamine HCL
- 638gr NaOH
- 452 gr Anhydrous Sodium Sulfate
- 105 gr NaBH4
- 35 L distilled water
- 7 Liters DCM
- Fill the reactor with the 14 L of Methanol
- With stirring dissolve the Methylamine HCL
- Put the reactor temp at 0C(not the mixture temp) and add the NaOH, the temp will increase
- Once the temp come back to 20C add the P2P, the temp will increase stir it during 45min-1 hour
- Add 252gr of anhydrous sodium sulfate
- When the mixture temp arrives to 8C start adding portionwise the NaBH4 not exceeding the 20C
- Once all the NaBH4 has been added let it mixing under 20C during aprox 2 hours until the mixture stops bubbling
- Add the water and continue mixing during 5 min
- Add the DCM and mix it during 10 min
- Stop stirring and let layers get separated
- Keep the bottom layer and discard the upper one( not profitable to extract this aqueous phase)
- Add 200gr of anhydrous sodium sulfate to the saved layer and mix it
- Filter it in Buchner Funnel
- Evaporate the DCM
- Clean and smelly Methamphetamine freebase obtained
;-)
↑View previous replies…
- By Smahk
Methanol and methylamine hcl dissolved. NaOH was added and it clumped up sticky. Temperature up to 28. Dropped to 24.5 and holding. What seems to be wrong?
↑View previous replies…
chloroform: insoluble
diethyl ether: insoluble
ethanol: 29.1 (78°C)
ethyl acetate: insoluble
water: very soluble
As you can see is not as simple as "the only difference" in ethanol as a low solubility and it's in hot when this process is not in hot.
"How long should it take to rise and drop back down to 20c?
and after adding P2P oil, how long should it take to rise and fall back to 8C? I haven’t seen anything drop under 20c….."
I guess that you are expecting that the temp goes to 8C without a cooling source?
Will fall back to 20 or 8 or -10 depending of your cooling system.
- By btcboss2022
Hello,
Something must be wrong with your products for sure and temp with NaOH addition grows up to 50C more or less.
Something must be wrong with your products for sure and temp with NaOH addition grows up to 50C more or less.
- By btcboss2022
Methylamine HCL Solubility (g/100 g of solvent):
acetone: insolublechloroform: insoluble
diethyl ether: insoluble
ethanol: 29.1 (78°C)
ethyl acetate: insoluble
water: very soluble
As you can see is not as simple as "the only difference" in ethanol as a low solubility and it's in hot when this process is not in hot.
"How long should it take to rise and drop back down to 20c?
and after adding P2P oil, how long should it take to rise and fall back to 8C? I haven’t seen anything drop under 20c….."
I guess that you are expecting that the temp goes to 8C without a cooling source?
Will fall back to 20 or 8 or -10 depending of your cooling system.
- By btcboss2022
Could be of course I never tried with EtOH due low MeNH2*HCl solubility and the temp required to solve.
But If with MeOH don't happens possibly with EtOH neither at least seems that at the level of chemical structure but you know sometimes the chemical logic...;-)
But If with MeOH don't happens possibly with EtOH neither at least seems that at the level of chemical structure but you know sometimes the chemical logic...;-)