[toxic, volatile, flammable liquid hydrocarbon biproduct of coal distillation; structure consists of a closed hexagonal chain of six carbon atoms, each attached to a hydrogen atom and attached to each other by alternating single and double (resonating) bonds; in benzene derivatives, one or more of the hydrogen atoms are replaced by other atoms or radicals. ( CSP )]
UMLS (CSP) C0005036 - Organic Chemical
- Hazardous or Poisonous Substance