C2H5N
43.07 g/mol
Industrial ChemicalDanger
Aziridine
CAS151-56-4EC205-793-9
Category
Industrial Chemical
Compound Class
Amine
Primary Use
Monomer for polyethyleneimine production
Aziridine is a highly reactive, strained three-membered heterocyclic amine compound. It is primarily significant as the monomer used in the industrial production of polyethyleneimine and other organic chemicals.
Production of polyethyleneimineManufacturing of organic chemicalsPaper, textile, petroleum, lacquer, cosmetic, and photography industries
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 151-56-4
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Fire extinguishing agent intermediate
Safety Reference
Danger
H225Highly flammable liquid and vapour
H300Fatal if swallowed
H310Fatal in contact with skin
H314Causes severe skin burns and eye damage
H330Fatal if inhaled
H340May cause genetic defects
H350May cause cancer
H411Toxic to aquatic life with long lasting effects
H318Causes serious eye damage
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H401Toxic to aquatic life
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects
H317May cause an allergic skin reaction
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Aziridine (CAS 151-56-4) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
aziridine
InChIKey
NOWKCMXCCJGMRR-UHFFFAOYSA-N
SMILES
C1CN1
Synonyms (45)
- PEI
- 1H-Azirine, dihydro-
- Aethylenimin
- Aethylenimin [German]
- Azacyclopropane
- Aziran
- Azirane
- Aziridin
- Aziridin [German]
- Aziridine
- Dihydroazirene
- Dihydroazirine
- Dimethyleneimine
- Dimethylenimine
- Dow PEI-18
- Dow PEI-6
- Dow PEI-600e
- ETHYLENEIMINE
- Ethyleenimine
- Ethyleenimine [Dutch]
- Ethylene imine polymer
- Ethyleneimine, inhibited
- Ethylenimine
- Etilenimina
- Etilenimina [Italian]
- POLYETHYLENE GLYCOL)
- Poly(ethyleneimine) solution
- Polyethylenimine, linear