Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. condition changing (processes)
6. deterioration
7. degradation

Anotations

Scope note:

Spontaneous decay of photographic film on a cellulose triacetate base characterized by a strong vinegar aroma. Such deterioration is irreversible. The term is used most often in the context of motion picture film.