A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Oxirane[1] | |||
| Systematic IUPAC name
Epoxyethane Oxacyclopropane | |||
| Other names
Ethylene oxide
Dimethylene oxide 1,2-Epoxyethane -crown-1 Epoxide | |||
| Identifiers | |||
3D model (JSmol)
|
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| Abbreviations | EO, EtO | ||
| 102378 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.000.773 | ||
| EC Number |
| ||
| 676 | |||
| KEGG | |||
| MeSH | Ethylene+Oxide | ||
PubChem CID
|
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| RTECS number |
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| UNII | |||
| UN number | 1040 | ||
CompTox Dashboard (EPA)
|
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| Properties | |||
| C2H4O | |||
| Molar mass | 44.052 g·mol−1[2] | ||
| Appearance | Colorless gas | ||
| Odor | Like diethyl ether[3] | ||
| Density | 0.8821 g·cm−3[2] | ||
| Melting point | −112.46 °C (−170.43 °F; 160.69 K)[2] | ||
| Boiling point | 10.4 °C (50.7 °F; 283.5 K)[2] | ||
| Miscible | |||
| Vapor pressure | 1.46 atm (20 °C)[4] | ||
| −30.5·10−6 cm3/mol[5] | |||
Refractive index (nD)
|
1.3597 (589 nm)[2] | ||
| 1.94 D[6] | |||
| Thermochemistry | |||
Heat capacity (C)
|
47.9 J·mol−1·K−1[7] | ||
Std molar
entropy (S⦵298) |
242.5 J·mol−1·K−1[7] | ||
Std enthalpy of
formation (ΔfH⦵298) |
−52.6 kJ·mol−1[7] | ||
Gibbs free energy (ΔfG⦵)
|
−13.0 kJ·mol−1[7] | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards
|
Carcinogen Extremely flammable | ||
| GHS labelling: | |||
   
| |||
| H220, H230, H280, H301, H314, H331, H335, H336, H340, H350, H360FD, H372 | |||
