Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. [sodium and sodium compounds]
8. sodium compounds

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by function
6. preservative
7. preservative by composition or origin

Anotations

Scope note:

Colorless, odorless, crystalline salt used in very dilute solutions to fluoridate water and treat tooth decay. In higher concentrations, sodium fluoride is used as a fumigant, and a preservative for zoological specimens, paint, plaster, wood, and masonry.