This "desiccant" is called double absorbent; It can be used as a preservative in food packaging bags, mainly including iron powder, alkaline particles (quicklime), inorganic salts (sodium chloride), activated carbon and so on.

Because it contains quicklime, quicklime will release a lot of heat when it reacts with water in the body, so you must drink a lot of boiled water if you eat it by mistake.

In addition, "desiccant" is corrosive and harmful to the body. Don't eat it casually!