https://www.thevespiary.org/rhodium/Rhodium/chemistry/methylamine.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/methylamine.html)
Havent you read the methylamine synthesis FAQ? Recrystallization is the essential procedure in purifying the Ammonium Chloride/Methylamine.HCl/Diethylamine.HCl mixture. The procedure is explained in there well.
Also havent you heard of better ideas on producing methylamine without the worry of contamination of diethylamine? Try the al/hg reduction of just nitromethane alone. Then add NaOH to the post reduction solution and then bubble the methylamine gas into ethanol. Post 383107 (https://www.thevespiary.org/talk/index.php?topic=9268.msg38310700#msg38310700)
(Osmium: "Finally someone is doing this MeNO2 prereduction.", Methods Discourse)
Synthesis of Chloroform is really easy. All you need as acetone and calcium hypochlorite. https://www.thevespiary.org/rhodium/Rhodium/chemistry/chloroform.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/chloroform.html)
Good luck~