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Molecule
Ethylene Oxide
CAS: 75-21-8 · C2H4O
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 75-21-8
- Molecular Formula
- C2H4O
- Molecular Mass
- 44.05 g/mol
Identifiers
CAS Registry Number
75-21-8
SMILES
C1CO1
InChI Key
IAYPIBMASNFSPL-UHFFFAOYSA-N
InChI
InChI=1S/C2H4O/c1-2-3-1/h1-2H2
Names and Synonyms
- Ethylene Oxide Common Name
- Oxirane Synonym
- Ethylene oxide Synonym
- Ethyleneoxy Synonym
- Dihydrooxirene Synonym
- Dimethylene oxide Synonym
- 1,2-Epoxyethane Synonym
- ETO Synonym
- Oxacyclopropane Synonym
- Oxane Synonym
- Oxidoethane Synonym
- Oxirene, dihydro- Synonym
- T-Gas Synonym
- Oxyfume 12 Synonym
- Oxyfume Synonym
- Epoxyethane Synonym
- Ethene oxide Synonym
- Ciba-Geigy 9138 Synonym
- 12/88 Synonym
- Mirror Ox Synonym
- Oxyfume 2002 Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 44.05 g/mol | CAS Common Chemistry |
| 44.053 g/mol | RDKit | |
| Density | 0.88 g/cm³ | CAS Common Chemistry |
| 0.882 g/cm3 @ 10 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Ethylene_oxide | CAS Common Chemistry |
| Canonical SMILES | O1CC1 | CAS Common Chemistry |
| InChI | InChI=1S/C2H4O/c1-2-3-1/h1-2H2 | CAS Common Chemistry |
| InChI Key | InChIKey=IAYPIBMASNFSPL-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | -111 °C | CAS Common Chemistry |
| Name | Ethylene oxide | CAS Common Chemistry |
| Heavy Atom Count | 3 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 12.53 Ų | RDKit |
| LogP | 0.016600000000000004 | RDKit |
| 0.0166 | RDKit | |
| Molar Refractivity | 10.819 cm³/mol | RDKit |
| Ring Count | 1 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 1.0 | RDKit |
| Exact Mass | 44.026214748 g/mol | RDKit |
| Boiling Point | 10.7 °C @ 760 Torr | CAS Common Chemistry |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
8
7
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5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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Quick conversion
MW = 44.05 g/mol; density = 0.880 g/mL. Edit any field — others recompute live.
Related
Related molecules
Other compounds with formula C2H4O.
