Thiophene, also commonly called thiofuran, is a heterocyclic compound with the formula C4H4S. Consisting of a flat five-membered ring, it is aromatic as indicated by its extensive substitution reactions. Related to thiophene are benzothiophene and dibenzothiophene, containing the thiophene ring fused with one and two benzene rings, respectively. Compounds analogous to thiophene include furan (C4H4O) and pyrrole (C4H4NH).
Appearance & Physical State
colourless to pale yellow liquid
Density
1.051
Melting Point
-38ºC
Boiling Point
84ºC
Flash Point
-9ºC
Refractive Index
1.527-1.529
Stability
Stable. Highly flammable. Incompatible with strong oxidizing agents, nitrates.
