How to determine whether a material can be purified by crystallization
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A recent client needs to purify the materials they use; they usually employ sublimation for this purpose, but heating to 180°C is required. Is it possible to use crystallization for purification instead?
Theoretically, it is possible; the key is to focus on three points: 1, a solvent must be chosen to dissolve the substance. 2 The solubility of this substance in the solvent varies significantly with temperature. 3 This solvent is easy to remove.
Yes, you can use crystals to purify this material. Crystalline purification, also known as crystallization, can remove inert substances from the solvent, such as organic compounds and inorganic salts. First, you can heat the solution to 180°C; when the temperature of the solution is high enough, the solute in it will precipitate out of the water and form solid crystals. Then you can carry out steps such as filtering, cooling, and drying to obtain the purified substance