Methylamination - The material of the vessel - some questions

[Prima4mmc]

Hi. So far, I have performed the methylamination reaction at a lower rate in laboratory glass flasks, successively increasing the scale in HDPE drums. The freebase rinsing process as well as the hydrochloric acid acidification itself was also performed in the same vessel.

I would like to ask if the whole process from methylamination to cleaning to acidification could be done in a stainless steel container? The reagents used throughout the process are:
- dcm
- methylamine 40% in water
- bk4
- acetone
- hydrochloric acid 37 in water

Optional:
- nmp
- benzene

Will stainless steel not interfere with any of these reagents? I am most afraid of the hydrochloric acid acid acidification step in such a stainless steel vessel.

Greetings and standard thanks for your help, this forum is invaluable .

 

[ChemDamn]

Stainless steel is a bad idea. Freebase reacts with metal and decomposes. hydrochloric acid after a few brews will give rust in any way. use HDPE or glass, you can also use polypropylene

 

[Prima4mmc]

Thank you for your answer. As far as I know enamel pots are suitable, do you know anything about it?

As for hdpe you are completely right, I am currently using a curtec 68.5L barrel. It works perfectly

 

[ChemDamn]

Yes, enamel pots are suitable too