Ethylene oxide
- Formula: C2H4O
- Molecular weight: 44.0526
- IUPAC Standard InChI: InChI=1S/C2H4O/c1-2-3-1/h1-2H2
- IUPAC Standard InChIKey: IAYPIBMASNFSPL-UHFFFAOYSA-N
- CAS Registry Number: 75-21-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Oxirane; Dihydrooxirene; Dimethylene oxide; Epoxyethane; Ethene oxide; ETO; Oxacyclopropane; Oxane; Oxidoethane; Oxirene, dihydro-; Oxyfume; Oxyfume 12; T-Gas; 1,2-Epoxyethane; Aethylenoxid; Amprolene; Anprolene; Anproline; ENT-26263; E.O.; 1,2-Epoxyaethan; Ethyleenoxide; Etylenu tlenek; FEMA No. 2433; Merpol; NCI-C50088; α,β-Oxidoethane; Oxiraan; Oxiran; Rcra waste number U115; Sterilizing gas ethylene oxide 100%; UN 1040; Qazi-ketcham
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IR Spectrum
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Data compiled by: Coblentz Society, Inc.
Data compiled by: Pamela M. Chu, Franklin R. Guenther, George C. Rhoderick, and Walter J. Lafferty
- gas; IFS66V (Bruker); 3-Term B-H Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Boxcar Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Happ Genzel Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); NB Strong Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution - gas; IFS66V (Bruker); Triangular Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm-1 resolution
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
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Additional Data
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| Source | Fleming, et al., 1959 |
|---|---|
| Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
| Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
| Source reference | RAS UV No. 12873 |
| Instrument | n.i.g. |
| Melting point | - 111.7 |
| Boiling point | 10.6 |
Vibrational and/or electronic energy levels
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Takehiko Shimanouchi
Symmetry: C2ν Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | CH2 s-str | 3006 | C | 3006 S | gas | 3005 S p | liq. | ||
| a1 | 2 | CH2 scis | 1498 | B | 1498 W | gas | 1490 W p | liq. | ||
| a1 | 3 | Ring str | 1271 | B | 1271 S | gas | 1266 S p | liq. | ||
| a1 | 4 | CH2 wag | 1120 | D | 1118 W | solid solid | 1120 M p | liq. | ||
| a1 | 5 | Ring deform | 877 | B | 877 VS | gas | 867 M dp | liq. | ||
| a2 | 6 | CH2 a-str | 3063 | D | ia | 3063 W dp | liq. | OV(ν13) | ||
| a2 | 7 | CH2 twist | 1300 | E | ia | |||||
| a2 | 8 | CH2 rock | 860 | E | ia | |||||
| b1 | 9 | CH2 s-str | 3006 | C | 3006 S | gas | 3005 S p | liq. | OV(ν1) | |
| b1 | 10 | CH2 scis | 1472 | B | 1472 W | gas | ||||
| b1 | 11 | CH2 wag | 1151 | D | 1151 M | gas | 1150 W dp | liq. | ||
| b1 | 12 | Ring deform | 892 | D | 892 VS | gas | ||||
| b2 | 13 | CH2 a-str | 3065 | B | 3065 S | gas | 3063 W dp | liq. | ||
| b2 | 14 | CH2 twist | 1142 | D | 1142 M | gas | 1150 W dp | liq. | ||
| b2 | 15 | CH2 rock | 822 | B | 822 M | gas | 807 M dp | liq. | ||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| W | Weak |
| ia | Inactive |
| p | Polarized |
| dp | Depolarized |
| OV | Overlapped by band indicated in parentheses. |
| B | 1~3 cm-1 uncertainty |
| C | 3~6 cm-1 uncertainty |
| D | 6~15 cm-1 uncertainty |
| E | 15~30 cm-1 uncertainty |
References
Go To: Top, IR Spectrum, UV/Visible spectrum, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Fleming, et al., 1959
Fleming, G., et al.,
J. Chem. Phys., 1959, 30, 351. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, IR Spectrum, UV/Visible spectrum, Vibrational and/or electronic energy levels, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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