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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
Names and Synonyms:
Ethylene Oxide
Oxirane
Ethylene oxide
Ethyleneoxy
Dihydrooxirene
Dimethylene oxide
1,2-Epoxyethane
ETO
Oxacyclopropane
Oxane
Oxidoethane
Oxirene, dihydro-
T-Gas
Oxyfume 12
Oxyfume
Epoxyethane
Ethene oxide
Ciba-Geigy 9138
12/88
Mirror Ox
Oxyfume 2002
Identifiers:
SMILES:
C1CO1
InChI:
InChI=1S/C2H4O/c1-2-3-1/h1-2H2
Key Properties
Boiling Point
10.7 °C @ Press: 760 Torr
CAS Common Chemistry
Melting Point
-111 °C
CAS Common Chemistry
Density
0.88 g/cm³
CAS Common Chemistry
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
Predicting NMR spectra...
10 ppm
9
8
7
6
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.
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 44.05 g/mol | CAS Common Chemistry |
| 44.053 g/mol | RDKit | |
| 44.026214748 g/mol | RDKit | |
| Density | 0.88 g/cm³ | CAS Common Chemistry |
| 0.882 g/cm3 @ Temp: 10 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Ethylene_oxide | CAS Common Chemistry |
| Boiling Point | 10.7 °C @ Press: 760 Torr | 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 |
| Molar Refractivity | 10.819 | RDKit |
