Metamfetamiinin synteesi P2P:stä ja NaBH4-pelkistyksestä

[B APPLE]

Can the teacher teach me how to make 40% methylamine water using methylamine hydrochloride? Thank you！

 

[HIGGS BOSSON]

http://bbzzzsvqcrqtki6umym6itiixfhni37ybtt7mkbjyxn2pgllzxf2qgyd.onion/en/threads/methylamine-freebase-solution-preparation.10551/

Methylamine Freebase Solution Preparation

 

[B APPLE]

Teacher! I have tried this method! I don't know why the weight of 0.6kg distilled water cannot be increased by adding methylamine gas？

 

[William D.]

It is better not to use water in this reaction, use alcohol solutions.

 

[Chemistry lntern]

Hello teacher! Excuse me, on the left side of the three necked flask is the thermometer, in the middle is the calcium chloride tube, with cotton inside and a silicone glass stopper on the right, right? Will the synthesis fail if I change the downward stirrer midway due to the mixing problem caused by too much silica gel? Can't all three lids be opened after pouring in the liquid of phenylacetone and methylamine water and leaving it for one day？

 

[GhostChemist]

Synthesis is carried out without moisture access

 

[Chemistry lntern]

Thank you, teacher

 

[Chemistry lntern]

Teacher, may I ask what percentage of sodium hydroxide solution should be added

 

[Chemistry lntern]

My methamphetamine butter turns dark red after being saturated with hydrogen chloride What should I do if the evaporation crystallization turns black

 

[lalalander]

Send me a private message in DM. Let's review your procedure.

 

[Chemistry lntern]

teacher! May I ask what percentage of sodium hydroxide solution is added in the second stage of Figure 7? How much do we need to add next？