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Can an expired desiccant still work?
2019-01-23 09:51:33


The choice of container desiccant should be noted that in the container desiccant, the desiccant is also called sucking agent, which is used for moisture-proof and mildew-proof. A desiccant is a water-removing agent that absorbs moisture from the atmosphere. Its drying principle is to physically adsorb water molecules in its own structure or chemically absorb water molecules and change its chemical structure to become another kind. substance. Use in a small environment: The desiccant is placed directly in a bottle, can or other closed pouch to keep the contents in the small environment dry. Use in medium environment: desiccant is used directly in the packaged carton (or drum, bag) to avoid moisture in the package. Use in a large environment: desiccant is directly used in similar warehouses and containers to achieve the purpose of controlling the humidity of the large environment. What should you pay attention to during the selection and use of the desiccant?

1. It should be noted that the dried substance and the desiccant cannot react. Simply put, alkaline solvents cannot use acidic desiccants, and acidic materials cannot use alkaline desiccants.

2, pay attention to the safety of desiccant, generally requires that desiccant can not have harmful substances, especially for food, medicine desiccant.

3, pay attention to the adsorption capacity of the desiccant, if it is already invalid or poor adsorption capacity will definitely affect the purpose of use.

Container desiccant when in use

1. Make sure to use the desiccant in a relatively sealed environment so that it can better achieve the purpose of drying and moisture.

2. Make sure that the amount of desiccant is sufficient.

3. Make sure that the outer packaging paper of the desiccant is not damaged and is not easily damaged.

Can an expired desiccant be used? In the container desiccant, the desiccant is a chemical that can adsorb water molecules. Container desiccant is very useful in life, but many people are not very Understand, how long is the drying agent effective? See what environment you are placed in. If it is very humid, it will easily fail. It is usually one year. If it is placed in a dry place and sealed, it can basically be Can be used for a long time.

In the case of not participating in water, it is 1 year, and some desiccants are changed by the environment. Generally, it should be changed after one year of regular use. The color can still be baked back in time, and the effect may be gone. However, there are also one-time desiccants that cannot be used repeatedly. You have to look at the product description. The desiccant generally has no moisture absorption effect after being saturated with moisture. If it continues to be used, the water inside may permeate out. Therefore, it is not recommended to continue using the desiccant after the moisture absorption is saturated.

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