When you buy shoes or snacks, shoe boxes and bags often come with a small package of silica gel desiccant. Our general method of handling is to ignore it or throw it away. But the U.S. "life hacker" website has written an article pointed out that the silica gel desiccant actually has seven great uses, just throw away on too bad.
The silica gel desiccant is mainly obtained by reacting with sodium silicate and sulfuric acid, and through a series of post-treatment processes such as aging and acid bubble, etc. It is insoluble in water and any solvent, tasteless, chemically stable, and does not react with any substance except strong alkali and hydrofluoric acid. Both its chemical and physical properties give silica gel good moisture absorption ability. As a desiccant, the drying principle of silica gel relies on adsorption to remove the water molecules in moist substances, that is, through the mutual attraction between the plasmas on the solid surface and the water molecules in various gases and liquids, etc. and adsorbs them on the surface of solid substances, most of these substances have many pores and have a huge surface