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

Anotations

Scope note:

A sodium compound which in its anhydrous form occurs in nature as a chemical precipitate found in the minerals thenardite and mirabilite. It may also be obtained synthetically by mixing sodium chloride and sulfuric acid. As a solid or powder, sodium sulphate is used in the manufacture of various products. In conservation science it is addressed as an agent of salt damage to stone.