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Calcium chloride desiccant hygroscopic change process and principle

Release time:

2022-04-24

Calcium chloride desiccant can be applied to life, such as: shoes, bags, furniture, electronic instruments, hardware, etc., can also be applied to maritime container transportation and other aspects. So what is the chemical change process during its absorption? Will it leak?

**First, the powder before moisture absorption

The inside of calcium chloride itself is white powdery before moisture absorption.

**Second, start to absorb moisture

Moisture absorption will slowly penetrate from all sides to the middle, and there will be a noticeable color change.

**Third, there is a clump

Because calcium chloride will produce a chemical reaction when it absorbs moisture, it will slowly change from powder to hard and agglomerate, and at this time there will be a clump.

**Fourth, into a semi-fluid form

As the moisture increases, the semi-fluid state gradually forms inside the desiccant, and the water vapor in the humid air can still continue to be absorbed.

**Fifth, solidify into a gelatinous form

At this time, the calcium chloride desiccant slowly solidifies into a jelly-like gelatinous substance, and the hygroscopic state begins to approach saturation, but it can still be absorbed.

**Sixth, moisture absorption is complete

After absorbing moisture, the inside is a gelatinous jelly, there is no water, and there will be no leakage.