Does salt have a shelf life? What is the shelf life of salt?

Salt is an indispensable thing in daily life, so does salt have a shelf life? Maybe no one has thought about this question. After all, salt is used to preserve other things. Let's learn some knowledge about the shelf life of salt.

Pure salt without additives has no shelf life, as long as it is not exposed to moisture or contamination.

Salt with additives has a shelf life. For example, iodized salt can be stored for more than 18 months if it is sealed and protected from light. In addition, so-called variety salts also have a shelf life, such as low-sodium salt and pickling salt, which generally have a shelf life of 36 months. In addition, iodized salt is exempt from the shelf life on the packaging of the salt bag, and only salt containing trace elements such as calcium, iron, zinc, and selenium has a shelf life. Salt itself has no shelf life. It only needs to be stored in a moisture-proof and light-proof manner.

Why does salt have no expiration date?

Experts say that because the main component of salt is sodium chloride, its chemical properties are very stable and it will not deteriorate under normal conditions. Generally, a 400-gram bag of salt will be consumed within two months at most, so there is no need to worry. However, experts also warn that in order to maintain a good taste, it is best to use up salt within one year.