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Why use LiCl in DMF

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Why use LiCl in DMF

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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

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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.
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