Could anyone help with PTSA drying method?

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Phillip Leigh Van der Peet

You should be able to dissolve it in dry toluene and use your Dean-Stark to azeotrope off the water.

Book Purification of Laboratory Chemicals Seventh and Enlarged edition

Adil S. Aslam

Thanks a lot for your help.

Brennan A. Murphy

You could use camphorsulfonic acid as an alternative.

@brennan

Thanks for the feedback