Ethylene glycol (data page)

Template:Short description This page provides supplementary chemical data on ethylene glycol.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.

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Structure and properties

Template:Chembox header | Structure and properties
Index of refraction, nD	1.4318 at 20°C
Abbe number	?
Dielectric constant, εr	41.4 ε0 at 20 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Surface tension	47.99 dyn/cm at 25°C
Viscosity	16.1 mPa·s at 25°C

Thermodynamic properties

Template:Chembox header | Phase behavior
Triple point	256 K (−17 °C), ? Pa
Critical point	720 K (447 °C), 8.2 MPa
Standard enthalpy change of fusion, ΔfusHo	9.9 kJ/mol
Standard entropy change of fusion, ΔfusSo	38.2 J/(mol·K)
Standard enthalpy change of vaporization, ΔvapHo	65.6 kJ/mol
Standard entropy change of vaporization, ΔvapSo	? J/(mol·K)
Template:Chembox header | Solid properties
Standard enthalpy change of formation, ΔfHosolid	? kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Template:Chembox header | Liquid properties
Standard enthalpy change of formation, ΔfHoliquid	−460 kJ/mol
Standard molar entropy, Soliquid	166.9 J/(mol·K)
Heat capacity, cp	149.5 J/(mol·K)
Template:Chembox header | Gas properties
Standard enthalpy change of formation, ΔfHogas	−3955.4 kJ/mol
Standard molar entropy, Sogas	311.8 J/(mol·K)
Heat capacity, cp	78 J/(mol·K) at 25 °C

Vapor pressure of liquid

Template:Chembox header| P in mm Hg	1	10	40	100	400	760
Template:Chembox header| T in °C	53.0	92.1	120.0	141.8	178.5	197.3

Table data obtained from CRC Handbook of Chemistry and Physics, 44th ed.

File:LogEthyleneglycolVaporPressure.png

Temperature dependence of ethylene glycol vapor pressure. Uses formula ${\log }_{e}P[\text{kPa}]=-25.99771{\log }_{e}T[\text{K}]-\frac{14768.57}{T[\text{K}]}+191.4250+2.062331\times 10^{-05}(T[\text{K}]{)}^2$ obtained from CHERIC

Freezing point of aqueous solutions

Template:Chembox header | % ethylene glycol by volume	5	10	15	20	25	30	35	40	45	50
Template:Chembox header | Freezing point (°F)	−1.1	−2.2	−3.9	−6.7	−8.9	−12.8	−16.1	−20.6	−26.7	−33.2
Template:Chembox header | Specific gravity d90°	1.004	1.006	1.012	1.017	1.020	1.024	1.028	1.032	1.037	1.040

Table obtained from Lange's Handbook of Chemistry, 10th ed. Specific gravity is referenced to water at 15.6 °C.

See also

Distillation data

Vapor–liquid equilibrium for ethylene glycol/water P = 760 mmHg BP temp. °C % by mole water liquid vapor 110.00 79.8 99.3 116.40 61.3 98.5 124.30 55.9 97.7 124.50 55.3 97.6 126.00 48.2 97.1 128.10 42.6 96.3 129.50 41.1 96.2 130.50 38.8 95.5 131.20 36.5 95.2 135.20 28.9 92.6 136.00 28.3 92.4 138.00 24.1 90.9 142.50 21.6 88.7 149.00 17.8 85.2 158.10 12.9 77.6 167.40 10.2 70.6 178.60 6.5 56.3 184.20 3.4 37.9

Vapor–liquid equilibrium for ethylene glycol/methanol P = 760 mmHg BP temp. °C % by mole methanol liquid vapor 66.70 93.0 99.9 73.20 82.1 99.8 79.60 66.4 99.7 84.70 53.0 99.3 90.20 45.7 99.0 93.80 40.6 98.5 101.40 36.3 97.9 102.70 35.6 97.5 104.90 32.2 96.7 105.10 22.7 94.6 109.90 21.2 93.3 113.00 19.5 92.3 121.50 13.7 86.4 149.60 10.3 74.6 157.50 4.6 51.5 166.30 3.6 42.0 175.20 2.5 30.4 183.50 1.4 18.1 189.10 0.5 6.8

Spectral data

Template:Chembox header | UV-Vis
λmax	? nm
Extinction coefficient, ε	?
Template:Chembox header | IR
Major absorption bands	? cm−1
Template:Chembox header | NMR
Proton NMR	3.3-3.7 ppm
Carbon-13 NMR	62-65 ppm
Other NMR data
Template:Chembox header | MS
Masses of main fragments

Template:Chemical data page general note