C2H4O
44.05 g/mol
Industrial ChemicalDanger
Oxirane
CAS75-21-8EC200-849-9
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
Chemical intermediate for ethylene glycol
Oxirane, commonly known as ethylene oxide, is an industrial chemical primarily used as a chemical intermediate in the manufacture of ethylene glycol, which is a key component in antifreeze and polyester production. Its significance lies in its role as a versatile building block for various industrial products, including textiles, detergents, polyurethane foam, solvents, adhesives, and medicines.
Chemical intermediate for ethylene glycolFumigant and sterilant for food and cosmeticsSterilization of medical equipment and heat-sensitive instruments
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.
CAS 75-21-8
Related Compounds
SimilarStructure SimilarSimilarity 0.83
Dioxane
CAS123-91-1
Solvent for cellulose esters and resins
SimilarStructure SimilarSimilarity 0.83
18-crown-6
CAS17455-13-9
research compound
SimilarStructure SimilarSimilarity 0.83
12-crown-4
CAS294-93-9
Research compound
SimilarStructure SimilarSimilarity 0.83
15-crown-5
CAS33100-27-5
Crown ether for cation complexation
ReferenceSame Category
Bromoform
CAS75-25-2
mineral ore separation fluid
ReferenceSame Category
2-bromopropane
CAS75-26-3
organic synthesis intermediate
ReferenceSame Category
Isobutane
CAS75-28-5
fuel, refrigerant, propellant, gasoline additive
ReferenceSame Category
Isopropyl chloride
CAS75-29-6
Solvent and intermediate
Safety Reference
Danger
H220Extremely flammable gas
H301Toxic if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H331Toxic if inhaled
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H340May cause genetic defects
H350May cause cancer
H372Causes damage to organs through prolonged or repeated exposure
H230
H280Contains gas under pressure; may explode if heated
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H360May damage fertility or the unborn child
H317May cause an allergic skin reaction
H411Toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects
H370Causes damage to organs
H373May cause damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
Customs Tariff Classification
The international HS code for Oxirane (CAS 75-21-8) is 2910.10, 3808.59.
HS code (international, 6-digit)
2910.10, 3808.59
EU CN code (8-digit)
2910 10 00, 3808 59 00
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
oxirane
InChIKey
IAYPIBMASNFSPL-UHFFFAOYSA-N
SMILES
C1CO1
Synonyms (60)
- ETO
- 1,2-Epoxyaethan
- 1,2-Epoxyaethan [German]
- 1,2-Epoxyethane
- 75-21-8(Isooctane)
- 75-21-8(THF)
- Aethylenoxid
- Aethylenoxid [German]
- Amprolene
- Anprolene
- Anproline
- CIBA-GEIGY 9138
- Dihydrooxirene
- Dimethylene oxide
- E.O.
- ETHYLENE OXIDE
- ETHYLENE OXIDE [MART.]
- Epoxyethane
- Ethene oxide
- Ethox
- Ethyleenoxide
- Ethyleenoxide [Dutch]
- Ethylene (oxyde d')
- Ethylene (oxyde d') [French]
- Ethylene oxide solution
- Ethylene oxide, purum
- Ethylene oxide-13C?
- Ethylene-d4 oxide
- Etilene (ossido di)
- Etilene (ossido di) [Italian]
- Etylenu tlenek
- Etylenu tlenek [Polish]
- Merpol
- Oxacyclopropane
- Oxide, Ethylene
- Oxidoethane
- Oxiraan
- Oxiraan [Dutch]
- Oxiran
- Oxirane
- Oxiranyl
- Oxirene, Dihydro-
- Oxyfume
- Oxyfume 12
- Qazi-ketcham
- T-Gas
- alpha,beta-Oxidoethane
- epoxide or oxirane
- ethyleneoxy
- ethylenoxide
- monooxirane
- oxyde d'ethylene