Aromatic rings (also known as arenes or aromatic compounds) are hydrocarbons which contain benzene, or another type of related structure. Benzene, C6H6, is often represented as a ring of six carbon atoms, containing alternating single and double bonds. Benzene is a colourless, odourless liquid that is often associated with carcinogenic properties.
- ↑ The American Heritage® Dictionary of the English Language, 5th edition Copyright © 2013 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.