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All 4 posts Subject: lazy mans qiestion Please login to post Down

psytech
(Hive Bee)
11-06-04 00:56
No 539937
      lazy mans qiestion

Why in methylamine synthesis do you need to remove ammonium chloride? Why cant you just leave it in, boil away the water and extract with alcohol?

ApprenticeCook
(Hive Addict)
11-06-04 04:29
No 539980
      filtration is easy...

filtration is easy...

and the methylamine salt is also soluble in alcohol so you would extract your product along with the ammonium chloride.

Filtration of the solid from the freebase amine solution is easier and more effective to remove the excess.

-AC

Its just my opinion, but no-one listens to me anyway, and rightly so...

psytech
(Hive Bee)
11-06-04 07:41
No 539999
      tx

but the methylamine is not freebase its hcl. I just want to know if it interferes with meam formation

Rhodium
(Chief Bee)
11-06-04 08:34
No 540004
User Picture       I just want to know if it interferes with meam

I just want to know if it interferes with meam formation

It interferes with the MeNH₂·HCl crystallization, as the NH₄Cl precipitate is so voluminous - you will just have a large semi-solid goo which spatters stuff all around if trying to concentrate that as far as you need to for a decent yield.

^{The Hive - Clandestine Chemists Without Borders}

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	All 4 posts		Subject: lazy mans qiestion		Please login to post		Down


		psytech (Hive Bee) 11-06-04 00:56 No 539937				lazy mans qiestion
						Why in methylamine synthesis do you need to remove ammonium chloride? Why cant you just leave it in, boil away the water and extract with alcohol?



		ApprenticeCook (Hive Addict) 11-06-04 04:29 No 539980				filtration is easy...
						filtration is easy... and the methylamine salt is also soluble in alcohol so you would extract your product along with the ammonium chloride. Filtration of the solid from the freebase amine solution is easier and more effective to remove the excess. -AC Its just my opinion, but no-one listens to me anyway, and rightly so...



		psytech (Hive Bee) 11-06-04 07:41 No 539999				tx
						but the methylamine is not freebase its hcl. I just want to know if it interferes with meam formation



		Rhodium (Chief Bee) 11-06-04 08:34 No 540004				I just want to know if it interferes with meam
						I just want to know if it interferes with meam formation It interferes with the MeNH₂·HCl crystallization, as the NH₄Cl precipitate is so voluminous - you will just have a large semi-solid goo which spatters stuff all around if trying to concentrate that as far as you need to for a decent yield. ^{The Hive - Clandestine Chemists Without Borders}

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