Chromatography Forum

Chromatography Forum is a public discussion group where you can post questions, news, or messages of interest to chromatographers everywhere, but you must be registered to participate (registration is FREE). If you are a registered user, please log in.
http://www.chromforum.org/

Why use LiCl in DMF

http://www.chromforum.org/viewtopic.php?t=9140

Page 1 of 1

Why use LiCl in DMF

Posted: Mon Sep 08, 2008 4:27 pm
by berkeley1
We are currently looking to switch our THF system to a more polar solvent like DMF. It seems that many people use 0.1M LiCl in their DMF systems. What is the purpose of the LiCl? Does it just increase polarity or is their some stability argument? Thanks!

LiCl in DMF

Posted: Wed Sep 24, 2008 3:41 pm
by colex
It depends on your sample.
PEO, PS and PMMA you can measure without salt.
For Polyelectrolytes you have to add a salt like LiCl or LiBr to prevent interaction.
All times are UTC
Page 1 of 1
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/