Ethylene oxide
chemical compound
Ethylene oxide, called oxirane by IUPAC, is an organic compound with the chemical formula C
2H
4O.[5]
| |||
Names | |||
---|---|---|---|
Preferred IUPAC name
Oxirane | |||
Systematic IUPAC name
Epoxyethane Oxacyclopropane | |||
Other names
Ethylene oxide
Dimethylene oxide 1,2-Epoxyethane [3]-crown-1 Epoxide | |||
Identifiers | |||
3D model (JSmol)
|
|||
Abbreviations | EO, EtO | ||
ChEBI | |||
ChemSpider | |||
ECHA InfoCard | 100.000.773 | ||
EC Number |
| ||
KEGG | |||
MeSH | Ethylene+Oxide | ||
PubChem CID
|
|||
RTECS number |
| ||
UNII | |||
CompTox Dashboard (EPA)
|
|||
| |||
Properties | |||
C2H4O | |||
Molar mass | 44.052 g·mol−1[1] | ||
Appearance | Colorless gas | ||
Odor | Ether-like | ||
Density | 0.8821 g·cm−3[1] | ||
Melting point | −112.46 °C (−170.43 °F; 160.69 K)[1] | ||
Boiling point | 10.4 °C (50.7 °F; 283.5 K)[1] | ||
Miscible | |||
Vapor pressure | 1.46 atm (20 °C)[2] | ||
−30.5·10−6 cm3/mol[3] | |||
Refractive index (nD)
|
1.3597 (589 nm)[1] | ||
1.94 D | |||
Thermochemistry | |||
Std enthalpy of formation ΔfH |
−52.6 kJ·mol−1[4] | ||
Standard molar entropy S |
242.5 J·mol−1·K−1[4] | ||
Specific heat capacity, C | 47.9 J·mol−1·K−1[4] | ||
Hazards | |||
EU classification | F+ T Carc. Cat. 1 | ||
Main hazards | Carcinogen Extremely flammable | ||
NFPA 704 |
| ||
R-phrases | Template:R45, Template:R46, R12, R23, R36/37/38 | ||
S-phrases | S53, S45 | ||
Explosive limits | 3 to 100% | ||
U.S. Permissible exposure limit (PEL) |
TWA 1 ppm 5 ppm [15-minute excursion][2] | ||
Related compounds | |||
Related {{{label}}} | {{{value}}} | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
verify (what is ?) | |||
Infobox references | |||
References
change- ↑ 1.0 1.1 1.2 1.3 1.4 Haynes, p. 3.430
- ↑ 2.0 2.1 NIOSH Pocket Guide to Chemical Hazards. "#0275". National Institute for Occupational Safety and Health (NIOSH).
- ↑ Haynes, p. 3.576
- ↑ 4.0 4.1 4.2 Haynes, p. 5.22
- ↑ Rebsdat, Siegfried and Mayer, Dieter (2005) "Ethylene Oxide" in Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH, Weinheim. doi:10.1002/14356007.a10_117.