Ethylene glycol

Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound (a vicinal diol) 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.

Not to be confused with Polyethylene glycol, Diethylene glycol, Propylene glycol, or Glycol.
Ethylene glycol
Names
IUPAC names
Ethylene glycol
Ethane-1,2-diol
Preferred IUPAC name
Ethane-1,2-diol
Other names
  • Ethylene glycol
  • 1,2-Ethanediol
  • Ethylene alcohol
  • Hypodicarbonous acid
  • Monoethylene glycol
  • 1,2-Dihydroxyethane
  • Glycol solvent
Identifiers
3D model (JSmol)
3DMet
Abbreviations MEG
505945
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.159
EC Number
  • 203-473-3
943
KEGG
MeSH Ethylene+glycol
RTECS number
  • KW2975000
UNII
UN number 3082
  • InChI=1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2 Y
    Key: LYCAIKOWRPUZTN-UHFFFAOYSA-N Y
  • InChI=1/C2H6O2/c3-1-2-4/h3-4H,1-2H2
    Key: LYCAIKOWRPUZTN-UHFFFAOYAD
  • OCCO
Properties
C2H6O2
Molar mass 62.068 g·mol−1
Appearance Clear, colorless liquid
Odor Odorless
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
Vapor pressure 0.06 mmHg (20 °C)
Viscosity 1.61×10−2 Pa·s
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Harmful, produces poisonous oxalic acid when ingested, flammable
GHS labelling:
Warning
H302, H373
P260, P264, P270, P301+P312, P302, P314, P330, P501
NFPA 704 (fire diamond)
2
1
0
Flash point 111 °C (232 °F; 384 K) closed cup
410 °C (770 °F; 683 K)
Explosive limits 3.2–15.2%
NIOSH (US health exposure limits):
PEL (Permissible)
 None
REL (Recommended)
 None established
IDLH (Immediate danger)
 None
Safety data sheet (SDS) External SDS 1

External SDS 2

Related compounds
Related diols
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).
N verify (what is YN ?)
Infobox references
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