Chinese name: pyrrole

English name: pyrrole

Chemical formula: C4H5N

CAS Number: 109-97-7

Melting point: −23 °C

Alias: Nitrogen (miscellaneous) Mao

Molecular weight: 67.09

Boiling point: 129°C–131°C

Density: 0.967 g/cm3

Flash point: 33.33 °C

Properties: Colorless liquid with special odor.

Main application: used as standard material for chromatographic analysis, and also used in organic synthesis and pharmaceutical industry. Mainly used as a solvent for polyester fiber spinning. It is also used as metal preservative, epoxy resin curing agent, catalyst for olefin polymerization, and raw material for the pharmaceutical industry. Also used as photosensitizer.