Cyclic Acid Anhydrides: Human Health Aspects - James H. Kim, World Health Organization - Google Books

https://books.google.de/books?id=MD8Z5xJSeDMC&pg=PA6#v=onepage

Cyclic acid anhydrides are widely used in the chemical industry in the manufacture of polyester and alkyd resins and plasticizers and as epoxy resin hardeners. Acid anhydrides are irritants and are especially potent sensitizing agents. This document deals…