According to "Does Edible Salt Have a Shelf Life" published by the website of Inquiring for Doctors and Asking for Medicine, we know that ordinary edible salt has no expiration date, but if some special nutrients are added, it will have an expiration date, and the specific shelf life is different. If it is a salt containing iron salt, it is generally 1 year, generally iodized salt is 2 years, refined iodized salt is about 5 years, and low sodium salt is about 3 years, while the shelf life of selenium salt, calcium salt and zinc salt is about 8 years.

generally, the expiration time of salt can be set without setting it, but this does not mean that there is no expiration time, just an extension. Edible salt should be eaten within one year to ensure its taste if there is no expiration date. Try not to eat all the time. If you don't finish it within one year, it is recommended to buy new edible salt.