Desiccants are familiar items in our daily lives. In order to reduce the moisture content in food packaging and prevent rot and deterioration, desiccants need to be used, clothes, etc. also need to use desiccants.
There are two methods of water removal, chemical adsorption and physical adsorption. Chemosorption is the chemical reaction of water in the air and desiccant to produce hydrate. Physical adsorption, such as silicone, is the direct absorption of moisture in the air by physical methods.
Let's take a look at calcium chloride desiccant in chemical adsorption.
The main raw material of calcium chloride desiccant is calcium chloride, which is made of high-quality calcium carbonate and hydrochloric acid, and is refined by reaction synthesis, filtration, evaporation concentration, drying and other processes. White porous, granular or honeycomb solids. The taste is a bit bitter, odorless, and the aqueous solution is colorless. It is mainly used as a raw material for the production of other calcium salts in inorganic chemicals; it is also used as a dehydrating agent for gas desiccant and the production of alcohols, esters, ethers and acrylic resins. As a calcium enhancer, curing agent, chelating agent, desiccant and other food industry.