Vinegar Syndrome: What is it and how does it work?

Vinegar Syndrome: What is it and how does it work?

I was going to write something but this first link is unbeatably comprehensive and brief:

https://www.imagepermanenceinstitute.org/resources/newsletter-archive/v12/vinegar-syndrome

These two are also very good:

http://www.filmpreservation.org/preservation-basics/vinegar-syndrome

https://en.wikipedia.org/wiki/Cellulose_acetate_film