Calcium chloride desiccant is a commonly used moisture-adsorbing material, often employed to absorb moisture from the air to achieve a dehumidifying effect. Its main principles can be summarized as follows:

1. Moisture Absorption Reaction: Calcium chloride has strong hydrophilic properties. When exposed to humid air, it absorbs moisture from the surrounding environment through a hygroscopic reaction. This occurs because the structure of calcium chloride contains hydrates, which form compounds with environmental moisture, thereby adsorbing water.