I want to make propionic acid from propionates. I originally wanted to use sulfuric acid, but it is very strong (dehydrates the propionate), then I wanted to use phosphoric acid as an 85% solution. However, I would not have concentrated propionic acid (85%). I want to ask you, could I use p-toluenesulfonic acid with propionates? I believe it is not strong and dehydrating as sulfuric acid and I should get concentrated propionic acid. I just don't know the procedure, both substances are solid, so mix to a mixture and just heat?
Thank you. Lukáš S.