Seeking help with material separation
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Material composition: 75% isophthalic acid-5-sulfonic acid, 20% sulfuric acid, 5% sulfur trioxide. If water is not used, what kind of solvent can be used for separation?
It is possible to consider using resin to adsorb phthalic acid-5-sulfonic acid and then desorbing it with sodium hydroxide for drying, as macroporous resins mainly adsorb organic substances rather than inorganic ones, and they can withstand acids. If necessary, feel free to leave your contact information so we can discuss this further
Vacuum distillation – this requires an experiment.