1. Quicklime Desiccant
Quicklime Desiccant Its main component is calcium oxide, and its water absorption capacity is achieved through chemical reaction, so water absorption is irreversible. Regardless of the external humidity, it can maintain a moisture absorption capacity greater than 35% of its own weight, making it more suitable for low-temperature storage. It has excellent drying and moisture absorption effects, and the price is relatively low. It can be widely used in food, clothing, tea, leather, shoemaking, electrical appliances, and other industries. Currently, this type of desiccant is most commonly used in "snow cakes". However, quicklime desiccant has strong alkaline corrosiveness, and incidents of harming children's or elderly people's eyes often occur, so it has gradually been phased out.
This desiccant consists of different varieties of silica gel packaged in moisture-permeable small pouches. The main raw material, silica gel, is a hydrated silicon dioxide with a highly microporous structure. It is non-toxic, odorless, tasteless, chemically stable, and has strong moisture absorption properties. Therefore, it is widely used in the storage and transportation of instruments, meters, equipment, leather, bags, footwear, textiles, food, medicine, etc., to control the relative humidity of the environment and prevent items from getting damp, mildew, and rust. For example, it is used in xylitol and is also the only desiccant recognized by the EU.
3. Montmorillonite Desiccant
This desiccant uses pure natural bentonite as raw material, is environmentally friendly, non-toxic, odorless, and harmless to the human body. It has good adsorption performance at room temperature and general humidity, possesses adsorption activity, and functions such as static dehumidification and odor removal. Not only is its adsorption speed fast and adsorption capacity high, but it is also non-toxic, odorless, non-contact corrosive, and non-polluting to the environment, especially when applied to food packaging, it is harmless to humans. Scope of application: Widely used in products that cannot use oil seals or gas phase storage, such as: optical instruments, electronic products, medical health products, food packaging, and dry air storage for military and civilian products.
4. Calcium Chloride Desiccant
The main raw material of calcium chloride desiccant is calcium chloride, which is refined from high-quality calcium carbonate and hydrochloric acid through reaction synthesis, filtration, evaporation, concentration, drying, and other processes. It is a white porous block, granular, or honeycomb solid. It tastes slightly bitter and is odorless. The aqueous solution is colorless. It is mainly used as a raw material for the production of various other calcium salts in inorganic chemical industry; also used as a gas desiccant and a dehydrating agent in the production of alcohols, esters, ethers, and acrylic resins. In the food industry, it is used as a calcium fortifier, firming agent, chelating agent, desiccant, etc.
5. Fiber Desiccant
Fiber desiccant is refined from pure natural plant fibers through special processes. Among them, film-coated fiber desiccant sheets are particularly convenient, practical, and space-saving. Their moisture absorption capacity can reach 100% of their own weight, which is unmatched by ordinary desiccants. In addition, this product is safe, hygienic, and moderately priced, making it an ideal choice for many biological products, health foods, and medicines.
