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. sulfide (material)

Anotations

Scope note:

Toxic, flammable, colorless gas that smells like rotten eggs. Hydrogen sulfide may be created by decay of organic matter or obtained as a byproduct of refining carbonaceous fuels such as natural gas, crude oil, and coal. As an atmospheric pollutant, hydrogen sulfide blackens lead pigments, and tarnishes silver.