Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
 Pages:  1  2
Author: Subject: Bubbling dry HCl gas through a extract
International Hazard

Posts: 657
Registered: 3-9-2017
Location: 26 Ancho street
Member Is Offline

Mood: when in danger or in doubt, run in circles, scream and shout.

[*] posted on 15-1-2020 at 10:55

In PIHKAL, etherial solutions of alkaloids are often made into HCl salts by diluting with DRY ethanol (10:1 or so usually) and then adding the calculated amount of concentrated HCl.

This saves the need for a HCl generator set-up, and makes it possible to use the calculated amount of acid without a large excess, but does call for lots of dry ethanol.

I use sulfuric acid dripped on salt wetted with conc HCl when I need HCl gas.
The gas rises through a condenser (Ice water) packed with broken glass, or glass coils if I'm feeling fancy, then by tubing into an Erlenmeyer with a lot of drying agent in there.

Works well enough for most things.

"You're not just telling us what we want to hear?"
"No Sir"
"Because we only want to hear the truth"
"Well, then I guess I am telling you what you want to hear."
"Son, didn't we just tell you not to do that?"

View user's profile View All Posts By User
 Pages:  1  2

  Go To Top