Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by physical form]
7. colloid (particulate material)
8. gel

Anotations

Scope note:

Granular hydrated silica used as a desiccant, often employed in long-term storage of electronics or optical devices such as cameras. It absorbs and releases moisture based on ambient humidity. Rather than a drying agent, it is more accurately a moisture stabilizer.