Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material

Anotations

Scope note:

A clear, colorless, poisonous liquid which can be polymerized to form acrylic and modacrylic fibers. It is coplymerized with butadiene to create nitrile rubber. Acrylonitrile is also used as an insecticide.