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
7. carbon dioxide

Anotations

Scope note:

Carbon dioxide used in its liquid state as a non-toxic, environmentally friendly solvent for cleaning, degreasing, and decontaminating materials. Liquid carbon dioxide is also used to promote plant growth in a greenhouse environment, and, stored under pressure in a tank, as a carbon dioxide fire extinguisher. And has been used in the treatment of ethnological and natural history museum collections.