Sinteza metamfetamina iz P2P in redukcije NaBH4

[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 Dampier]

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]

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？

 

[darknessss]

@GhostChemist @G.Patton how is the stopper with the tube named in the hydrogen chloride setup that flows the fumes into the beaker? Can't find it anywhere!

 

[G.Patton]

Are you talking about a hose?

 

[darknessss]

Yes how is it connected to the glass?

 

[G.Patton]

Please, read article Laboratory Glassware and another one about Lab equipment in Lab FAQ section.

 

[Su sho p]

Excuse me, teacher! Can silica gel be replaced with 3a molecular sieve？

 

[GhostChemist]

Yes

 

[Su sho p]

Thank you! Excuse me, teacher. Do I need to seal the three necked flask after adding P2P stirring for 2 hours in Figure 2?

 

[GhostChemist]

The flask must be connected to the atmosphere through a layer of silica gel

 

[Su sho p]

Thank you, teacher！

 

[unclefesteraddams1]

Thanks

 

[krystol_kid]

this is Racemic Methamphetamine meaning I would need to separate the two isomers to yield crystal meth or (ICE) correct?

 

[GhostChemist]

Yes, racemic meth is formed if using this method