First, quicklime desiccant
The main component of quicklime desiccant is calcium oxide. This kind of desiccant has low price and can be widely used in food, clothing, tea, leather, shoemaking, electrical appliances and other industries. However, quicklime desiccant has been gradually eliminated because of its strong alkali corrosiveness, which often hurts the eyes of children or the elderly.
Second, silica gel desiccant
The main raw material of silica gel desiccant is silica gel, which is non-toxic, tasteless and odorless, with stable chemical properties and strong moisture absorption. Therefore, it is widely used to control the relative humidity of the environment in the storage and transportation of instruments, meters, equipment, leather, bags, shoes, textiles, food, medicines, etc., and to prevent items from getting wet, mildewing and rusting.
Third, montmorillonite desiccant
This desiccant is made of pure natural raw material bentonite, which is environmentally friendly, non-toxic and tasteless, and has no harm to human body. It is widely used in products that cannot be sealed by oil seal and gas phase, such as optical instruments, electronic products, medical care, food packaging and dry air sealing of military products and civilian products.
Four, calcium chloride desiccant
The main raw material of calcium chloride desiccant is calcium chloride. Fast adsorption speed, high adsorption capacity, non-toxic, tasteless, non-contact corrosiveness, no environmental pollution, especially no harm to human body, widely used in oil seal, optical medicine, health food and military products.
Five, fiber desiccant
Fiber desiccant is made of pure natural plant fiber through a special process. Convenient and practical, does not occupy space. In addition, the product is safe and hygienic, and the price is moderate, so it is an ideal choice for many biological and health foods and medicines.
Extended data:
Food desiccant taboo:
1, not allowed to eat
The quicklime desiccant releases heat in the process of turning into calcium hydroxide when it meets water, which will burn the mouth or esophagus. At the same time, calcium hydroxide is alkaline and corrosive to the mouth and esophagus. If it is splashed into the eyes, it will cause damage to the conjunctiva and cornea.
2, no flooding
It will give off heat and burn the skin and eyes. If the space is closed, it will explode if it is large or meets certain conditions. After shaking it in a sealed empty water bottle, the pressure may flush the container and spray it on the skin and eyes, causing serious burns.
3. Don't open the bag
Solid quicklime is an alkaline oxide, which easily reacts with water after contact with human body, and the generated calcium hydroxide is more alkaline, which will also burn skin or eyes;
4, children do not touch
Children generally like to play and have a strong curiosity. When parents don't know, tearing the packaging bag and soaking in water may cause the above explosion, burns and blindness.
5, can't put it in the closet as a desiccant.
Desiccant bags are generally not tight, and can be torn directly by hand, which is easy to be damaged. If they fall into clothes, quicklime will absorb water and transform into mature lime, which will damage clothes, and if the concentration is high, it will remain on clothes and burn the skin.
6. Wash in time for medical treatment
If quicklime desiccant accidentally enters your eyes, please wash it with plenty of water quickly and seek medical attention in time. Calcium hydroxide belongs to soda ash, which burns the eyes and other tissues seriously, especially for children. If they accidentally get it in their eyes, they need to be washed in time for medical treatment.
References:
Baidu Encyclopedia-food desiccant
Baidu Encyclopedia-Desiccant
People's Health Network-No.501issue: Watch out! Food desiccant can turn into "invisible killer"