Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. solvent
7. [solvent by composition or origin]
8. hydrocarbon solvent
9. aromatic hydrocarbon

Anotations

Scope note:

A mixture of three isomeric hydrocarbons form commercial xylene; a colorless, flammable, toxic liquid insoluble in water but that may be combined with many organic liquids and is commonly used as a solvent for lacquers and rubber cements. Other forms of xylene are used as solvents, components of aviation fuel, and for dyes, fibers, and films.