Aziridine

[5][6] It is a colorless, toxic, volatile liquid that is of significant practical interest.

[8] Its derivatives, also referred to as aziridines, are of broader interest in medicinal chemistry.

Aziridine is less basic than acyclic aliphatic amines, with a pKa of 7.9 for the conjugate acid, due to increased s character of the nitrogen free electron pair.

The Nippon Shokubai process requires an oxide catalyst and high temperatures to effect the dehydration.

[7] Aziridine forms a wide variety of polymeric derivatives, known as polyethylenimines (PEI).

NFPA 704 four-colored diamond Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas Flammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasoline Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide Special hazards (white): no code