| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved method for purifying an ionic liquid capable of more efficiently purifying a compound which crystallizes in various metamorphoses.SOLUTION: The method for purifying an ionic liquid uses fractional crystallization in which a part of the ionic liquid is crystallized and the crystals formed are separated from the residual liquid. In the process, a prescribed amount of at least one entraining substance is added to the ionic liquid. |
