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. [sulphur and sulphur compounds]
8. sulfur compounds
9. sulfite

Anotations

Scope note:

A soluble sodium salt of sulfurous acid (sulfite), appearing as small crystals or powder. Sodium sulfite is used in multiple industries and exhibits bleaching, reducing, de-sulfurizing, and dechlorinating functions. In the food industry it is used to maintain the appearance of freshness, and to preserve meat. It is also a component in many drugs, to help stabilize and maintain potency. It is used in the pulp and paper industry as a water treatment, and in photography it has been used in developer solutions, and as a hypo clear solution.