Camphor

 

An extract from the camphor laurel tree, camphor is a member of the terpene family of chemicals.

Camphor is used in the manufacture of cellulose nitrate film as a plasticiser. Camphor is also used as a natural insect repellent.

 

https://www.nfsa.gov.au/sites/default/files/uploads/2010/10/05/camphor.gif