Table 1. Main properties of pyrrole and co-vapors.

Co-vapor	Boiling point (°C)	Dielectric constant	Dipole moment (D)	Miscibility with pyrrole
Pyrrole	130.0	7.50	1.80
Methanol	65.0	33.00	1.70	Miscible
Ethanol	79.0	24.60	1.69	Miscible
Water	100.0	80.00	1.84	Immiscible*
Hexane	68.7	1.88	0.08	Immiscible
Toluene	111.0	2.38	0.36	Miscible
Benzene	80.0	2.30	0.00	Miscible

*Pyrrole is soluble in water only at a small amount of 60 g L⁻¹.