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  1. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    May I ask which non-polar solvents can be used to extract methamphetamine
  2. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Teacher, toluene is a non-polar solvent. Does that mean that after toluene is extracted, dried and filtered, hydrogen chloride can be directly introduced
  3. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Teacher, what I don't understand is that if I use toluene for extraction and sodium sulfate for dry distillation, will toluene be distilled together with amphetamine
  4. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Teacher, this is how I operate. Can you help me take a look! After heating and refluxing, I extracted it with toluene and poured it into anhydrous sodium sulfate to dry it. After filtration, I distilled the toluene and left behind amphetamine before introducing hydrogen chloride
  5. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    You are the most enthusiastic here. Only you can reply to me. If I succeed, I will definitely thank you
  6. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Teacher, is it feasible to replace DCM with toluene without DCM? Is it correct to distill toluene after drying, leaving behind a yellow liquid instead of distilling it all together
  7. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Teacher, may I ask if the subsequent operation is the same if DCM is changed to toluene? Thank you for your guidance, teacher
  8. Z

    Methamphetamine from ephedrine tablets

    Is it okay if the pH value exceeds 10? However, DCM did not replace toluene
  9. Z

    Methamphetamine from ephedrine tablets

    Can you ask why there is no white solid after introducing hydrogen chloride after toluene extraction? How to dry solid under high vacuum
  10. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    How to operate an information expert if you want to
  11. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    May I ask if the reason why there is no white sediment when introducing hydrogen chloride is because the extract is not dry? Or are there any other reasons that could have caused it
  12. Z

    Methamphetamine from ephedrine tablets

    May I ask how to dry toluene after extraction? Is there no white sediment when toluene is not dried and hydrogen chloride is introduced
  13. Z

    Methamphetamine from ephedrine tablets

    All the previous programs have been completed, but every time hydrogen chloride is introduced, there is no sediment produced, and toluene is also dried with anhydrous sodium sulfate. What is the reason
  14. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Will the distillation of DCM methamphetamine also be carried out together with Figure 17
  15. Z

    Methamphetamine synthesis from Ephedrine or Pseudoephedrine

    Toluene, I sealed it with anhydrous sodium sulfate and dried it for more than 12 hours. Why is there still water
  16. Z

    Methamphetamine synthesis from Ephedrine or Pseudoephedrine

    Thank you very much for your guidance, teacher
  17. Z

    Methamphetamine synthesis from Ephedrine or Pseudoephedrine

    May I ask if there is still no white sediment when I introduce hydrogen chloride? What is the problem? Thank you
  18. Z

    Methamphetamine synthesis from Ephedrine or Pseudoephedrine

    Calcined sodium sulfate refers to
  19. Z

    Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

    Is there any question about the distillation of anhydrous sodium sulfate after drying in Figure 16? After DCM distillation, amphetamine will be separated from DCM
  20. Z

    Methamphetamine synthesis from Ephedrine or Pseudoephedrine

    Why wash sodium sulfate in Figure 17
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