| abstract |
To provide a salt production method using an ion exchange membrane having sufficient ion exchange performance and durability, capable of efficiently and stably producing a salt by electrodialysis. In a method for producing a salt that is concentrated by electrodialysis, the electrodialysis is carried out using a vinyl alcohol polymer component (A), a vinylene polymer component (B), and a polymer component having an ionic group. A method for producing a salt, wherein the ion exchange membrane containing the copolymer (P) containing (C) as a constituent component is used as a cation exchange membrane and / or an anion exchange membrane. [Selection] Figure 3 |