Silica Gel Desiccant Roll 1g Continuous Pack Solid Medicinal Paper Bag Moisture-proof Agent The main component of silica gel desiccant is silicon dioxide, which is chemically stable and non-combustible. Silica gel desiccant is a physical adsorption desiccant rather than a chemical moisture-absorbing desiccant, and silica gel is an FDA-approved raw material that can directly contact food and drugs. Roll desiccant is processed by packaging silica gel in breathable small bags, which can be conveniently placed in various item packaging to prevent moisture, rust, mold, and odor. It is suitable for instruments and meters, clothing and footwear, container transportation, home wardrobes, and moisture prevention for various items.