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 chemical form]
7. compounds (materials)

Anotations

Scope note:

Any of a class of three-membered cyclic ring ethers including ethylene oxide, propylene oxide, and butylene oxide. Epoxides have been used as a permanent wood preservative treatment based on the chemical modification of the wood components.