The shelf life of salt is generally three years.

Salt generally refers to table salt, which has a shelf life, and it should not be stored for too long, three years is appropriate. Pure salt is not processed has no shelf life, because sodium chloride is more stable, will not be decomposed over time or volatile, as long as the environment where the salt is not damp, do not have pollution, can be stored for a long time, and can be consumed for a long time.

But some processed salt, such as iodized salt, potassium salt, etc., have a certain shelf life, the salt in the iodine or potassium, long exposure to the air, will cause the content is insufficient, the salt can still be eaten, just supplemental iodine, potassium will be affected. General refined iodized salt shelf life of 5 years, low-sodium salt and other salt shelf life of 3 years. It should be noted that, although salt, vinegar and other food products do not need to be rounded labeled shelf life, but in order to maintain a better taste, it is best to use up within 1 year.

Types of salt

1, low-sodium salt: salt is the main component of sodium chloride, the sodium ion component is to provide us with the salty taste of the material. Low-sodium salt as the name implies is to reduce the sodium content of salt, so low-sodium salt can also be understood as light salt, this type of salt is lower than ordinary salt salinity.

2, well mine salt: well mine salt extraction method is more cumbersome, the extraction of the original place is also very different. Well mine salt from the mine in the saturated brine, through filtration and distillation and other technologies, in addition to harmful substances, and finally left only the salt crystals, which is the well mine salt. Compared to other table salt, well mine salt has a higher content of minerals.

3, bamboo salt: bamboo salt is obtained through the bamboo salt, compared to the well salt, it is also rich in minerals, the difference is that it belongs to the weak alkali, and a variety of trace elements are contained, more balanced, the salt body is also more delicate and white, easily soluble in water, easy to cook, but also all types of salt in the most expensive type.

Refer to Baidu Encyclopedia-Edible Salt for more information