Assertion: butadiene | /r/HasProperty | h 2 c=ch―ch=ch
Facets:
Source sentences:
text: Some of the most important unsaturated hydrocarbons industrially are acetylene (HC≡CH), ethylene (H 2 C=CH 2 ), propylene (H 3 C―CH=CH 2 ), and butadiene (H 2 C=CH―CH=CH 2 ).