Metamfetaminsyntese fra efedrin ved hjælp af I2 og H3PO2

GhostChemist

Expert
Joined
Nov 20, 2022
Messages
233
Reaction score
399
Points
63

Download Video

Starting Reagents and Materials

  • 6 g Synthetic ephedrine hydrochloride racemic
  • 12 g I2
  • 10.8 ml H3PO2 (50%)
  • 20 ml H2O
  • 50 ml 25% NaOH (15-20 г NaOH)
  • 3 g sodium thiosulfate
  • 250-300 ml DCM
  • 30-50 g Na2SO4
  • 100 ml Petroleum ether
  • HCl gas
  • 100 g NH4Cl
  • 25 ml H2SO4 83%
  • Flasks 250 and 500 ml
  • Glasses
  • Funnels
  • Separating funnel
  • Magnetic stirrer with heating
  • Flask heater
  • Reflux
  • Paper filters
  • Pipettes
  • Porcelain filter for vacuum filtration
  • Chen's reagents
  • Simon's reagents
  • pH indicator paper

The process way presented on Scheme 1.
VeDctYyaZu

Starting reagents for meth synthesis: synthetic ephedrine hydrochloride, I2 and H3PO2. Fig. 1
PWCsqvD49Y

Ephedrine hydrochloride ground into a powder in a mortar. Fig 2
WIvbT9PFqz
The powder of Ephedrine hydrochloride is poured into the flask. Fig 3
ZEeBqbPLaU

I2 is ground into a powder. Fig 4
FYBnUR1kAL
The powder of I2 is to the Ephedrine hydrochloride in the flask and continuously mixing. Fig 5
Tm1HUFyR3h

The H3PO2 is added in portions to the mixture in the flask while continuously mixing. Fig 6
A8lB3Ji1mr

The reaction is very intense. Reflux connected to the flask. Fig 7
XE7wgfJ8PC

The following portions of acid are added after the cessation of the vigorous reaction. Fig 8
Vxqjhy9wNU

The mixture is heated at a temperature of 100-160°C for 10-12 hours. Fig 9
ZcWYfV3zgD

The solution should become transparent and homogeneous. Fig 10
HyPr1xA2Le

To the resulting reaction mixture, 15-20 ml of water is added. Fig 11
4MNbCt2ucj

NaOH solution is added to the RM until reaching an alkaline pH. Fig 12
ASrvMt0ZFC

Next, sodium thiosulfate solution is added. Fig 13
EKtBYS8XZT

The mixture cooled and added 100 ml of DCM (boiling point of DCM is 40°C). Fig 14
J1GOEnvsAd

The mixture is transferred to a separating funnel. DCM is separated. Additionally, 2-3 extractions of DCM are carried out with portions of 40-50 ml each. Fig 15
WRv04wUlVs

The layer of DCM is dried with sodium sulfate. Fig 16
AgRpywY0jf

The DCM is distilled at a temperature of 90-110°C until the distillation of DCM ceases. Additionally, sodium sulfate is washed with new portions of DCM. Fig 17
F53Kjle4VR

To the obtained oil, 30+30 ml of petroleum ether is added. Fig 18
4m2g3huUIw

The solution is filtered through a paper filter. Fig 19
5p20KNOjHi

Impurities is in the distillation flask and on the filter. Fig 20
C5XvaUuWqT

Solution of methamphetamine in petroleum ether is saturated with gaseous hydrogen chloride until reaching an acidic pH. Hydrogen chloride is generated by adding sulfuric acid to ammonium chloride. Fig 21
ST4aRK31CF

The precipitated meth hydrochloride is filtered. Fig 22
NUgAuKVrvI

Simon's reaction with meth hydrochloride is positive (blue coloring); Chen's reaction is negative; Chen's control on a clean sample of ephedrine is positive. Fig 23
O4x8viI2DZ

The filtered meth hydrochloride precipitate is dried on the air. Fig 24
GJy8UVOzA2

Yield is 4.24 g or 77.1 %
 
Last edited by a moderator:

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Mange tak for at dele. Endnu en klassisk forberedelsestråd skaber en perfekt scene for nyankomne.
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Der er et par enkle spørgsmål: 1: Er det muligt at bruge 99 % hypoforsyre? 2: Hvad er den bedste specifikke tilbagesvalingstemperatur? 3: Hvilken katalysator kan tilsættes for at fremskynde reaktionen uden at vente i 10-12 timer? 4: Når man inddamper DCM, kan man så filtrere natriumsulfat først for at kunne udføre de næste trin?
 

GhostChemist

Expert
Joined
Nov 20, 2022
Messages
233
Reaction score
399
Points
63
1. ja
2. 100-160 C
3. Nu proces uden katalysatorer (måske i fremtiden)
4. Forstår ikke dette spørgsmål
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Mine herrer, jeg lavede dette eksperiment, og jeg opvarmede det til 125 grader, fordi fosforsyre opvarmes til 130 grader, vil der være fosfatbrintgas (giftig). Er der nogen måde at undgå dette på?
 

billythekid

Don't buy from me
New Member
Joined
Apr 18, 2024
Messages
13
Reaction score
5
Points
3
Det er hypofosforsyre, og opvarmning af reaktionsblandingen over 110 resulterer i større mængde urenheder og er farligt, du ønsker ikke at nedbryde hypo høj risiko for brand eksplosion og forgiftning tålmodighed i vigtig her
 
View previous replies…

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Ja, sir, jeg bruger 50 % H3PO2, og den perfekte temperatur er inden for 110 grader, ikke?
 

billythekid

Don't buy from me
New Member
Joined
Apr 18, 2024
Messages
13
Reaction score
5
Points
3
110 grader Celsius er bedst, men det nedbrydes ved 130 grader til fosfingas (spontant brændbart) og fosforsyre, for det er ikke en god idé at have tilbagesvalingskondensatoren forseglet, til mindre reaktioner kan du sætte en ballon over toppen for at hjælpe med at holde den hydrojodiske gas inde,
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Javel, hr. Jeg installerede også to store balloner på kondensatoren for at placere fordampningen af jod. Hvor lang tid tager det at fuldføre omdannelsen af methyl ved 110 grader?
 

GhostChemist

Expert
Joined
Nov 20, 2022
Messages
233
Reaction score
399
Points
63
du kan bruge absorptionen af PH3 med NaClO og NaOH
H3PO2 ødelægges ved 170 C
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Hej, sir, den her forbandede oversættelse, jeg forstår ikke, hvad du mener. Mener du hvilken slags natrium eller noget andet? Hvordan fungerer det? Tak for dit svar.
 

CARLITOBRO

Don't buy from me
Resident
Language
🇺🇸
Joined
Aug 24, 2024
Messages
47
Reaction score
31
Points
18
kan jeg bruge hydriodic acid 57% i stedet for hypophosphorus acid? venligst gentag
 

Mr.blank00

Don't buy from me
Resident
Language
🇺🇸
Joined
Sep 9, 2023
Messages
10
Reaction score
3
Points
3
Hej, åbnes eller lukkes topdækslet på kondensatoren, når man tilbagesvaler i 10-12 timer, og bruges der isvand til at afkøle kondensatoren, for hvis man bare opvarmer den uden kondensator i 12 timer, vil opløsningen fordampe og tørre ud, forklar venligst.
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Hej, ved du, hvorfor det hedder en kondensator i stedet for et andet navn?
 

GhostChemist

Expert
Joined
Nov 20, 2022
Messages
233
Reaction score
399
Points
63
tilbagesvalingskondensatoren skal åbnes eller dækkes med et stykke vat dyppet i vand
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Der er brug for koldt vand, jo koldere jo bedre, da der er mulighed for eksplosion i forseglingen.
 

ImRegistered

Don't buy from me
Resident
Language
🇺🇸
Joined
Apr 27, 2024
Messages
15
Reaction score
5
Points
3
Ville denne syntese fungere med p2p?
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Nej, det er kun egnet til efedrin. P2P bruger amalgam eller andre linjer.
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Ja, der er mange måder at vælge det BB-forum, der passer til dig.
 

hacke8

Don't buy from me
Resident
Language
🇺🇸
Joined
Feb 26, 2024
Messages
129
Reaction score
40
Points
28
Der er et trin, jeg ikke forstår. Figur 17, DHM destilleres ved 90-110 grader. Hvad er dette DHM? Eller kan det destilleres direkte ved 40 grader uden at flyde ud?
 
Top