Back إيثيلين غليكول Arabic Etilenglicol AST Etilenqlikol Azerbaijani اتیلن قلیکول AZB Этыленгліколь Byelorussian Этыленгліколь BE-X-OLD Етиленгликол Bulgarian Etilenglicol Catalan Ethylenglykol Czech Ethylenglycol German
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| Names | |||
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| IUPAC names | |||
| Preferred IUPAC name
Ethane-1,2-diol[3] | |||
Other names
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| Identifiers | |||
3D model (JSmol)
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| Abbreviations | MEG | ||
| 505945 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.003.159 | ||
| EC Number |
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| 943 | |||
| KEGG | |||
| MeSH | Ethylene+glycol | ||
PubChem CID
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| RTECS number |
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| UNII | |||
| UN number | 3082 | ||
CompTox Dashboard (EPA)
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| Properties | |||
| C2H6O2 | |||
| Molar mass | 62.068 g·mol−1 | ||
| Appearance | colorless liquid | ||
| Odor | Odorless[4] | ||
| Density | 1.1132 g/cm3 (0.04022 lb/cu in) | ||
| Melting point | −12.9 °C (8.8 °F; 260.2 K) | ||
| Boiling point | 197.3 °C (387.1 °F; 470.4 K) | ||
| Miscible | |||
| Solubility | Soluble in alcohols, ethyl acetate, THF, and dioxane. Miscible with DCM and slightly miscible with diethyl ether. Not miscible with toluene or hexanes. | ||
| log P | -1.69[5] | ||
| Vapor pressure | 7.99 Pa (20 °C)[4] | ||
| Viscosity | 1.61×10−2 Pa·s[6] | ||
| Thermochemistry | |||
Heat capacity (C)
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149.5 J/(mol·K) | ||
Std molar
entropy (S⦵298) |
166.9 J/(mol·K) | ||
Std enthalpy of
formation (ΔfH⦵298) |
−460 kJ/mol | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards
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Harmful, produces poisonous oxalic acid when ingested, flammable | ||
| GHS labelling: | |||
 
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| Warning | |||
| H302, H373 | |||
| P260, P264, P270, P301+P312, P302, P314, P330, P501 | |||
| NFPA 704 (fire diamond) | |||
| Flash point | 111 °C (232 °F; 384 K) closed cup | ||
| 410 °C (770 °F; 683 K) | |||
| Explosive limits | 3.2–15.2%[4] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
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None[4] | ||
REL (Recommended)
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None established[4] | ||
IDLH (Immediate danger)
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None[4] | ||
| Safety data sheet (SDS) | External SDS 1 | ||
| Related compounds | |||
Related diols
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| Supplementary data page | |||
| Ethylene glycol (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound (a vicinal diol[7]) with the formula (CH2OH)2. It is mainly used for two purposes: as a raw material in the manufacture of polyester fibers and for antifreeze formulations. It is an odorless, colorless, flammable, viscous liquid. It has a sweet taste, but is toxic in high concentrations. This molecule has been observed in outer space.[8]
- ^ "Ethylene glycol (CHEBI:30742)".
- ^ "Ethylene glycol (CHEBI:30742)".
- ^ International Union of Pure and Applied Chemistry (2014). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. The Royal Society of Chemistry. p. 690. doi:10.1039/9781849733069. ISBN 978-0-85404-182-4.
- ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0272". National Institute for Occupational Safety and Health (NIOSH).
- ^ "Ethylene glycol". www.chemsrc.com.
- ^ Elert, Glenn. "Viscosity". The Physics Hypertextbook. Retrieved 2007-10-02.
- ^ "3.8: 3.8 Alcohols - Classification and Nomenclature". Chemistry LibreTexts. 2018-10-13. Retrieved 2022-04-21.
- ^ J. M. Hollis; F. J. Lovas; P. R. Jewell; L. H. Coudert (2002-05-20). "Interstellar Antifreeze: Ethylene Glycol". The Astrophysical Journal. 571 (1): L59 – L62. Bibcode:2002ApJ...571L..59H. doi:10.1086/341148. S2CID 56198291.