Question methylamin 40% from methylamin HCl

[xile]

If one wants to make a 40% solution of methylamine in water from methylamin HCl, then he has to dissolve NaOH in 6 parts water and then add 4 parts methylamine HCl. How much NaOH does one need for this? This reaction also produces NaCl, right? Does one have to cut off this NaCl by distillation or does NaCl always stay in the aqueous layer? If distillation is absolutely necessary; can one do this simply with a round bottom flask with tubing that is routed into a 2nd round bottom flask and bubbling in 6 parts ice cold water or is a condenser necessary?

 

[UWe9o12jkied91d]

methylamine has a bp of -16 if im not wrong, there is no way to realistically condense it efficiently.The salt can be just left there for most applications

 

[Mo0odi]

What is the best way to make methylamine solution 30% or 40% or 44% from methylamine hydrochloride

 

[UWe9o12jkied91d]

Drip conc. NaOH over the solid hydrochloride under chilling

 

[rampage]

how concentrated?

 

[Ortist]

You need 1 mol of NaOH per 1 mol of Methylamine.HCl,
NaCl is not a problem,
No you can't distill.

What you can do if you really need to get rid of NaCl is to drip solution of methylamine.hcl over wet NaOH. It will generate gas which you can bubble thru water. Then you need to find out %% of your water solution by weighing it

 

[xile]

Uwe and you saved my day and answered my questions.
Thx a lot.

 

[Yavuz1453]

He has plenty of methylamine hydrochloric crystals, that is, its raw material. I can turn it into methamphetamine on Tuesday. I need help. Thank you.

 

[Osmosis Vanderwaal]

0.593g NaOH for every g of CH³NH³Cl is what I get. I wonder what would happen if you put them in a soda bottle and put the cap on? You can condense ammonia this way. The bottle can handle 100+PSI all day. Is there a reason why the methylamine gas wouldn't dissolve in water at high pressure?